1285758890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{523}}^1\times {\mathrm{18911}}^1$

素因数の和:19454

約数の個数: 32

約数和(自身を含む): 2497291776

約数和(自身を除く): 1211532886

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 523, 1046, 2615, 5230, 6799, 13598, 18911, 33995, 37822, 67990, 94555, 189110, 245843, 491686, 1229215, 2458430, 9890453, 19780906, 49452265, 98904530, 128575889, 257151778, 642879445, 1285758890]

約数ペア:

[(1, 1285758890), (2, 642879445), (5, 257151778), (10, 128575889), (13, 98904530), (26, 49452265), (65, 19780906), (130, 9890453), (523, 2458430), (1046, 1229215), (2615, 491686), (5230, 245843), (6799, 189110), (13598, 94555), (18911, 67990), (33995, 37822)]