21691320

素因数分解:

$2^3\times 3^1\times 5^1\times 7^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1$

素因数の和:83

約数の個数: 256

約数和(自身を含む): 82944000

約数和(自身を除く): 61252680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 17, 20, 21, 24, 28, 30, 31, 34, 35, 40, 42, 49, 51, 56, 60, 62, 68, 70, 84, 85, 93, 98, 102, 105, 119, 120, 124, 136, 140, 147, 155, 168, 170, 186, 196, 204, 210, 217, 238, 245, 248, 255, 280, 294, 310, 340, 343, 357, 372, 392, 408, 420, 434, 465, 476, 490, 510, 527, 588, 595, 620, 651, 680, 686, 714, 735, 744, 833, 840, 868, 930, 952, 980, 1020, 1029, 1054, 1085, 1176, 1190, 1240, 1302, 1372, 1428, 1470, 1519, 1581, 1666, 1715, 1736, 1785, 1860, 1960, 2040, 2058, 2108, 2170, 2380, 2499, 2604, 2635, 2744, 2856, 2940, 3038, 3162, 3255, 3332, 3430, 3570, 3689, 3720, 4116, 4165, 4216, 4340, 4557, 4760, 4998, 5145, 5208, 5270, 5831, 5880, 6076, 6324, 6510, 6664, 6860, 7140, 7378, 7595, 7905, 8232, 8330, 8680, 9114, 9996, 10290, 10540, 10633, 11067, 11662, 12152, 12495, 12648, 13020, 13720, 14280, 14756, 15190, 15810, 16660, 17493, 18228, 18445, 19992, 20580, 21080, 21266, 22134, 22785, 23324, 24990, 25823, 26040, 29155, 29512, 30380, 31620, 31899, 33320, 34986, 36456, 36890, 41160, 42532, 44268, 45570, 46648, 49980, 51646, 53165, 55335, 58310, 60760, 63240, 63798, 69972, 73780, 77469, 85064, 87465, 88536, 91140, 99960, 103292, 106330, 110670, 116620, 127596, 129115, 139944, 147560, 154938, 159495, 174930, 180761, 182280, 206584, 212660, 221340, 233240, 255192, 258230, 309876, 318990, 349860, 361522, 387345, 425320, 442680, 516460, 542283, 619752, 637980, 699720, 723044, 774690, 903805, 1032920, 1084566, 1275960, 1446088, 1549380, 1807610, 2169132, 2711415, 3098760, 3615220, 4338264, 5422830, 7230440, 10845660, 21691320]

約数ペア:

[(1, 21691320), (2, 10845660), (3, 7230440), (4, 5422830), (5, 4338264), (6, 3615220), (7, 3098760), (8, 2711415), (10, 2169132), (12, 1807610), (14, 1549380), (15, 1446088), (17, 1275960), (20, 1084566), (21, 1032920), (24, 903805), (28, 774690), (30, 723044), (31, 699720), (34, 637980), (35, 619752), (40, 542283), (42, 516460), (49, 442680), (51, 425320), (56, 387345), (60, 361522), (62, 349860), (68, 318990), (70, 309876), (84, 258230), (85, 255192), (93, 233240), (98, 221340), (102, 212660), (105, 206584), (119, 182280), (120, 180761), (124, 174930), (136, 159495), (140, 154938), (147, 147560), (155, 139944), (168, 129115), (170, 127596), (186, 116620), (196, 110670), (204, 106330), (210, 103292), (217, 99960), (238, 91140), (245, 88536), (248, 87465), (255, 85064), (280, 77469), (294, 73780), (310, 69972), (340, 63798), (343, 63240), (357, 60760), (372, 58310), (392, 55335), (408, 53165), (420, 51646), (434, 49980), (465, 46648), (476, 45570), (490, 44268), (510, 42532), (527, 41160), (588, 36890), (595, 36456), (620, 34986), (651, 33320), (680, 31899), (686, 31620), (714, 30380), (735, 29512), (744, 29155), (833, 26040), (840, 25823), (868, 24990), (930, 23324), (952, 22785), (980, 22134), (1020, 21266), (1029, 21080), (1054, 20580), (1085, 19992), (1176, 18445), (1190, 18228), (1240, 17493), (1302, 16660), (1372, 15810), (1428, 15190), (1470, 14756), (1519, 14280), (1581, 13720), (1666, 13020), (1715, 12648), (1736, 12495), (1785, 12152), (1860, 11662), (1960, 11067), (2040, 10633), (2058, 10540), (2108, 10290), (2170, 9996), (2380, 9114), (2499, 8680), (2604, 8330), (2635, 8232), (2744, 7905), (2856, 7595), (2940, 7378), (3038, 7140), (3162, 6860), (3255, 6664), (3332, 6510), (3430, 6324), (3570, 6076), (3689, 5880), (3720, 5831), (4116, 5270), (4165, 5208), (4216, 5145), (4340, 4998), (4557, 4760)]