19791250

素因数分解:

$2^1\times 5^4\times {\mathrm{71}}^1\times {\mathrm{223}}^1$

素因数の和:316

約数の個数: 40

約数和(自身を含む): 37787904

約数和(自身を除く): 17996654

約数列:

[1, 2, 5, 10, 25, 50, 71, 125, 142, 223, 250, 355, 446, 625, 710, 1115, 1250, 1775, 2230, 3550, 5575, 8875, 11150, 15833, 17750, 27875, 31666, 44375, 55750, 79165, 88750, 139375, 158330, 278750, 395825, 791650, 1979125, 3958250, 9895625, 19791250]

約数ペア:

[(1, 19791250), (2, 9895625), (5, 3958250), (10, 1979125), (25, 791650), (50, 395825), (71, 278750), (125, 158330), (142, 139375), (223, 88750), (250, 79165), (355, 55750), (446, 44375), (625, 31666), (710, 27875), (1115, 17750), (1250, 15833), (1775, 11150), (2230, 8875), (3550, 5575)]