398342560

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1$

素因数の和:220

約数の個数: 288

約数和(自身を含む): 1241049600

約数和(自身を除く): 842707040

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 31, 32, 35, 40, 44, 49, 55, 56, 62, 70, 77, 80, 88, 98, 110, 112, 124, 140, 149, 154, 155, 160, 176, 196, 217, 220, 224, 245, 248, 280, 298, 308, 310, 341, 352, 385, 392, 434, 440, 490, 496, 539, 560, 596, 616, 620, 682, 745, 770, 784, 868, 880, 980, 992, 1043, 1078, 1085, 1120, 1192, 1232, 1240, 1364, 1490, 1519, 1540, 1568, 1639, 1705, 1736, 1760, 1960, 2086, 2156, 2170, 2384, 2387, 2464, 2480, 2695, 2728, 2980, 3038, 3080, 3278, 3410, 3472, 3920, 4172, 4312, 4340, 4619, 4768, 4774, 4960, 5215, 5390, 5456, 5960, 6076, 6160, 6556, 6820, 6944, 7301, 7595, 7840, 8195, 8344, 8624, 8680, 9238, 9548, 10430, 10780, 10912, 11473, 11920, 11935, 12152, 12320, 13112, 13640, 14602, 15190, 16390, 16688, 16709, 17248, 17360, 18476, 19096, 20860, 21560, 22946, 23095, 23840, 23870, 24304, 26224, 27280, 29204, 30380, 32333, 32780, 33376, 33418, 34720, 36505, 36952, 38192, 41720, 43120, 45892, 46190, 47740, 48608, 50809, 52448, 54560, 57365, 58408, 60760, 64666, 65560, 66836, 73010, 73904, 76384, 80311, 83440, 83545, 86240, 91784, 92380, 95480, 101618, 114730, 116816, 121520, 129332, 131120, 133672, 146020, 147808, 160622, 161665, 166880, 167090, 183568, 184760, 190960, 203236, 226331, 229460, 233632, 243040, 254045, 258664, 262240, 267344, 292040, 321244, 323330, 334180, 355663, 367136, 369520, 381920, 401555, 406472, 452662, 458920, 508090, 517328, 534688, 584080, 642488, 646660, 668360, 711326, 739040, 803110, 812944, 905324, 917840, 1016180, 1034656, 1131655, 1168160, 1284976, 1293320, 1336720, 1422652, 1606220, 1625888, 1778315, 1810648, 1835680, 2032360, 2263310, 2489641, 2569952, 2586640, 2673440, 2845304, 3212440, 3556630, 3621296, 4064720, 4526620, 4979282, 5173280, 5690608, 6424880, 7113260, 7242592, 8129440, 9053240, 9958564, 11381216, 12448205, 12849760, 14226520, 18106480, 19917128, 24896410, 28453040, 36212960, 39834256, 49792820, 56906080, 79668512, 99585640, 199171280, 398342560]

約数ペア:

[(1, 398342560), (2, 199171280), (4, 99585640), (5, 79668512), (7, 56906080), (8, 49792820), (10, 39834256), (11, 36212960), (14, 28453040), (16, 24896410), (20, 19917128), (22, 18106480), (28, 14226520), (31, 12849760), (32, 12448205), (35, 11381216), (40, 9958564), (44, 9053240), (49, 8129440), (55, 7242592), (56, 7113260), (62, 6424880), (70, 5690608), (77, 5173280), (80, 4979282), (88, 4526620), (98, 4064720), (110, 3621296), (112, 3556630), (124, 3212440), (140, 2845304), (149, 2673440), (154, 2586640), (155, 2569952), (160, 2489641), (176, 2263310), (196, 2032360), (217, 1835680), (220, 1810648), (224, 1778315), (245, 1625888), (248, 1606220), (280, 1422652), (298, 1336720), (308, 1293320), (310, 1284976), (341, 1168160), (352, 1131655), (385, 1034656), (392, 1016180), (434, 917840), (440, 905324), (490, 812944), (496, 803110), (539, 739040), (560, 711326), (596, 668360), (616, 646660), (620, 642488), (682, 584080), (745, 534688), (770, 517328), (784, 508090), (868, 458920), (880, 452662), (980, 406472), (992, 401555), (1043, 381920), (1078, 369520), (1085, 367136), (1120, 355663), (1192, 334180), (1232, 323330), (1240, 321244), (1364, 292040), (1490, 267344), (1519, 262240), (1540, 258664), (1568, 254045), (1639, 243040), (1705, 233632), (1736, 229460), (1760, 226331), (1960, 203236), (2086, 190960), (2156, 184760), (2170, 183568), (2384, 167090), (2387, 166880), (2464, 161665), (2480, 160622), (2695, 147808), (2728, 146020), (2980, 133672), (3038, 131120), (3080, 129332), (3278, 121520), (3410, 116816), (3472, 114730), (3920, 101618), (4172, 95480), (4312, 92380), (4340, 91784), (4619, 86240), (4768, 83545), (4774, 83440), (4960, 80311), (5215, 76384), (5390, 73904), (5456, 73010), (5960, 66836), (6076, 65560), (6160, 64666), (6556, 60760), (6820, 58408), (6944, 57365), (7301, 54560), (7595, 52448), (7840, 50809), (8195, 48608), (8344, 47740), (8624, 46190), (8680, 45892), (9238, 43120), (9548, 41720), (10430, 38192), (10780, 36952), (10912, 36505), (11473, 34720), (11920, 33418), (11935, 33376), (12152, 32780), (12320, 32333), (13112, 30380), (13640, 29204), (14602, 27280), (15190, 26224), (16390, 24304), (16688, 23870), (16709, 23840), (17248, 23095), (17360, 22946), (18476, 21560), (19096, 20860)]