19715845

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1\times {\mathrm{409}}^1$

素因数の和:756

約数の個数: 16

約数和(自身を含む): 24560640

約数和(自身を除く): 4844795

約数列:

[1, 5, 31, 155, 311, 409, 1555, 2045, 9641, 12679, 48205, 63395, 127199, 635995, 3943169, 19715845]

約数ペア:

[(1, 19715845), (5, 3943169), (31, 635995), (155, 127199), (311, 63395), (409, 48205), (1555, 12679), (2045, 9641)]