31495880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1637}}^1$

素因数の和:1698

約数の個数: 64

約数和(自身を含む): 78427440

約数和(自身を除く): 46931560

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 37, 40, 52, 65, 74, 104, 130, 148, 185, 260, 296, 370, 481, 520, 740, 962, 1480, 1637, 1924, 2405, 3274, 3848, 4810, 6548, 8185, 9620, 13096, 16370, 19240, 21281, 32740, 42562, 60569, 65480, 85124, 106405, 121138, 170248, 212810, 242276, 302845, 425620, 484552, 605690, 787397, 851240, 1211380, 1574794, 2422760, 3149588, 3936985, 6299176, 7873970, 15747940, 31495880]

約数ペア:

[(1, 31495880), (2, 15747940), (4, 7873970), (5, 6299176), (8, 3936985), (10, 3149588), (13, 2422760), (20, 1574794), (26, 1211380), (37, 851240), (40, 787397), (52, 605690), (65, 484552), (74, 425620), (104, 302845), (130, 242276), (148, 212810), (185, 170248), (260, 121138), (296, 106405), (370, 85124), (481, 65480), (520, 60569), (740, 42562), (962, 32740), (1480, 21281), (1637, 19240), (1924, 16370), (2405, 13096), (3274, 9620), (3848, 8185), (4810, 6548)]