17847980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{12569}}^1$

素因数の和:12649

約数の個数: 24

約数和(自身を含む): 38011680

約数和(自身を除く): 20163700

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 12569, 25138, 50276, 62845, 125690, 251380, 892399, 1784798, 3569596, 4461995, 8923990, 17847980]

約数ペア:

[(1, 17847980), (2, 8923990), (4, 4461995), (5, 3569596), (10, 1784798), (20, 892399), (71, 251380), (142, 125690), (284, 62845), (355, 50276), (710, 25138), (1420, 12569)]