15978640

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{379}}^1$

素因数の和:440

約数の個数: 80

約数和(自身を含む): 40711680

約数和(自身を除く): 24733040

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 31, 34, 40, 62, 68, 80, 85, 124, 136, 155, 170, 248, 272, 310, 340, 379, 496, 527, 620, 680, 758, 1054, 1240, 1360, 1516, 1895, 2108, 2480, 2635, 3032, 3790, 4216, 5270, 6064, 6443, 7580, 8432, 10540, 11749, 12886, 15160, 21080, 23498, 25772, 30320, 32215, 42160, 46996, 51544, 58745, 64430, 93992, 103088, 117490, 128860, 187984, 199733, 234980, 257720, 399466, 469960, 515440, 798932, 939920, 998665, 1597864, 1997330, 3195728, 3994660, 7989320, 15978640]

約数ペア:

[(1, 15978640), (2, 7989320), (4, 3994660), (5, 3195728), (8, 1997330), (10, 1597864), (16, 998665), (17, 939920), (20, 798932), (31, 515440), (34, 469960), (40, 399466), (62, 257720), (68, 234980), (80, 199733), (85, 187984), (124, 128860), (136, 117490), (155, 103088), (170, 93992), (248, 64430), (272, 58745), (310, 51544), (340, 46996), (379, 42160), (496, 32215), (527, 30320), (620, 25772), (680, 23498), (758, 21080), (1054, 15160), (1240, 12886), (1360, 11749), (1516, 10540), (1895, 8432), (2108, 7580), (2480, 6443), (2635, 6064), (3032, 5270), (3790, 4216)]