1998560

素因数分解:

$2^5\times 5^1\times {\mathrm{12491}}^1$

素因数の和:12506

約数の個数: 24

約数和(自身を含む): 4721976

約数和(自身を除く): 2723416

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 12491, 24982, 49964, 62455, 99928, 124910, 199856, 249820, 399712, 499640, 999280, 1998560]

約数ペア:

[(1, 1998560), (2, 999280), (4, 499640), (5, 399712), (8, 249820), (10, 199856), (16, 124910), (20, 99928), (32, 62455), (40, 49964), (80, 24982), (160, 12491)]