21696480

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:114

約数の個数: 288

約数和(自身を含む): 85307040

約数和(自身を除く): 63610560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 19, 20, 24, 26, 30, 32, 36, 38, 39, 40, 45, 48, 52, 57, 60, 61, 65, 72, 76, 78, 80, 90, 95, 96, 104, 114, 117, 120, 122, 130, 144, 152, 156, 160, 171, 180, 183, 190, 195, 208, 228, 234, 240, 244, 247, 260, 285, 288, 304, 305, 312, 342, 360, 366, 380, 390, 416, 456, 468, 480, 488, 494, 520, 549, 570, 585, 608, 610, 624, 684, 720, 732, 741, 760, 780, 793, 855, 912, 915, 936, 976, 988, 1040, 1098, 1140, 1159, 1170, 1220, 1235, 1248, 1368, 1440, 1464, 1482, 1520, 1560, 1586, 1710, 1824, 1830, 1872, 1952, 1976, 2080, 2196, 2223, 2280, 2318, 2340, 2379, 2440, 2470, 2736, 2745, 2928, 2964, 3040, 3120, 3172, 3420, 3477, 3660, 3705, 3744, 3952, 3965, 4392, 4446, 4560, 4636, 4680, 4758, 4880, 4940, 5472, 5490, 5795, 5856, 5928, 6240, 6344, 6840, 6954, 7137, 7320, 7410, 7904, 7930, 8784, 8892, 9120, 9272, 9360, 9516, 9760, 9880, 10431, 10980, 11115, 11590, 11856, 11895, 12688, 13680, 13908, 14274, 14640, 14820, 15067, 15860, 17385, 17568, 17784, 18544, 18720, 19032, 19760, 20862, 21960, 22230, 23180, 23712, 23790, 25376, 27360, 27816, 28548, 29280, 29640, 30134, 31720, 34770, 35568, 35685, 37088, 38064, 39520, 41724, 43920, 44460, 45201, 46360, 47580, 52155, 55632, 57096, 59280, 60268, 63440, 69540, 71136, 71370, 75335, 76128, 83448, 87840, 88920, 90402, 92720, 95160, 104310, 111264, 114192, 118560, 120536, 126880, 135603, 139080, 142740, 150670, 166896, 177840, 180804, 185440, 190320, 208620, 226005, 228384, 241072, 271206, 278160, 285480, 301340, 333792, 355680, 361608, 380640, 417240, 452010, 482144, 542412, 556320, 570960, 602680, 678015, 723216, 834480, 904020, 1084824, 1141920, 1205360, 1356030, 1446432, 1668960, 1808040, 2169648, 2410720, 2712060, 3616080, 4339296, 5424120, 7232160, 10848240, 21696480]

約数ペア:

[(1, 21696480), (2, 10848240), (3, 7232160), (4, 5424120), (5, 4339296), (6, 3616080), (8, 2712060), (9, 2410720), (10, 2169648), (12, 1808040), (13, 1668960), (15, 1446432), (16, 1356030), (18, 1205360), (19, 1141920), (20, 1084824), (24, 904020), (26, 834480), (30, 723216), (32, 678015), (36, 602680), (38, 570960), (39, 556320), (40, 542412), (45, 482144), (48, 452010), (52, 417240), (57, 380640), (60, 361608), (61, 355680), (65, 333792), (72, 301340), (76, 285480), (78, 278160), (80, 271206), (90, 241072), (95, 228384), (96, 226005), (104, 208620), (114, 190320), (117, 185440), (120, 180804), (122, 177840), (130, 166896), (144, 150670), (152, 142740), (156, 139080), (160, 135603), (171, 126880), (180, 120536), (183, 118560), (190, 114192), (195, 111264), (208, 104310), (228, 95160), (234, 92720), (240, 90402), (244, 88920), (247, 87840), (260, 83448), (285, 76128), (288, 75335), (304, 71370), (305, 71136), (312, 69540), (342, 63440), (360, 60268), (366, 59280), (380, 57096), (390, 55632), (416, 52155), (456, 47580), (468, 46360), (480, 45201), (488, 44460), (494, 43920), (520, 41724), (549, 39520), (570, 38064), (585, 37088), (608, 35685), (610, 35568), (624, 34770), (684, 31720), (720, 30134), (732, 29640), (741, 29280), (760, 28548), (780, 27816), (793, 27360), (855, 25376), (912, 23790), (915, 23712), (936, 23180), (976, 22230), (988, 21960), (1040, 20862), (1098, 19760), (1140, 19032), (1159, 18720), (1170, 18544), (1220, 17784), (1235, 17568), (1248, 17385), (1368, 15860), (1440, 15067), (1464, 14820), (1482, 14640), (1520, 14274), (1560, 13908), (1586, 13680), (1710, 12688), (1824, 11895), (1830, 11856), (1872, 11590), (1952, 11115), (1976, 10980), (2080, 10431), (2196, 9880), (2223, 9760), (2280, 9516), (2318, 9360), (2340, 9272), (2379, 9120), (2440, 8892), (2470, 8784), (2736, 7930), (2745, 7904), (2928, 7410), (2964, 7320), (3040, 7137), (3120, 6954), (3172, 6840), (3420, 6344), (3477, 6240), (3660, 5928), (3705, 5856), (3744, 5795), (3952, 5490), (3965, 5472), (4392, 4940), (4446, 4880), (4560, 4758), (4636, 4680)]