19744390

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{27809}}^1$

素因数の和:27887

約数の個数: 16

約数和(自身を含む): 36041760

約数和(自身を除く): 16297370

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 27809, 55618, 139045, 278090, 1974439, 3948878, 9872195, 19744390]

約数ペア:

[(1, 19744390), (2, 9872195), (5, 3948878), (10, 1974439), (71, 278090), (142, 139045), (355, 55618), (710, 27809)]