20865480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:195

約数の個数: 128

約数和(自身を含む): 66355200

約数和(自身を除く): 45489720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 71, 79, 93, 120, 124, 142, 155, 158, 186, 213, 237, 248, 284, 310, 316, 355, 372, 395, 426, 465, 474, 568, 620, 632, 710, 744, 790, 852, 930, 948, 1065, 1185, 1240, 1420, 1580, 1704, 1860, 1896, 2130, 2201, 2370, 2449, 2840, 3160, 3720, 4260, 4402, 4740, 4898, 5609, 6603, 7347, 8520, 8804, 9480, 9796, 11005, 11218, 12245, 13206, 14694, 16827, 17608, 19592, 22010, 22436, 24490, 26412, 28045, 29388, 33015, 33654, 36735, 44020, 44872, 48980, 52824, 56090, 58776, 66030, 67308, 73470, 84135, 88040, 97960, 112180, 132060, 134616, 146940, 168270, 173879, 224360, 264120, 293880, 336540, 347758, 521637, 673080, 695516, 869395, 1043274, 1391032, 1738790, 2086548, 2608185, 3477580, 4173096, 5216370, 6955160, 10432740, 20865480]

約数ペア:

[(1, 20865480), (2, 10432740), (3, 6955160), (4, 5216370), (5, 4173096), (6, 3477580), (8, 2608185), (10, 2086548), (12, 1738790), (15, 1391032), (20, 1043274), (24, 869395), (30, 695516), (31, 673080), (40, 521637), (60, 347758), (62, 336540), (71, 293880), (79, 264120), (93, 224360), (120, 173879), (124, 168270), (142, 146940), (155, 134616), (158, 132060), (186, 112180), (213, 97960), (237, 88040), (248, 84135), (284, 73470), (310, 67308), (316, 66030), (355, 58776), (372, 56090), (395, 52824), (426, 48980), (465, 44872), (474, 44020), (568, 36735), (620, 33654), (632, 33015), (710, 29388), (744, 28045), (790, 26412), (852, 24490), (930, 22436), (948, 22010), (1065, 19592), (1185, 17608), (1240, 16827), (1420, 14694), (1580, 13206), (1704, 12245), (1860, 11218), (1896, 11005), (2130, 9796), (2201, 9480), (2370, 8804), (2449, 8520), (2840, 7347), (3160, 6603), (3720, 5609), (4260, 4898), (4402, 4740)]