19804565

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{5903}}^1$

素因数の和:5980

約数の個数: 16

約数和(自身を含む): 26355456

約数和(自身を除く): 6550891

約数列:

[1, 5, 11, 55, 61, 305, 671, 3355, 5903, 29515, 64933, 324665, 360083, 1800415, 3960913, 19804565]

約数ペア:

[(1, 19804565), (5, 3960913), (11, 1800415), (55, 360083), (61, 324665), (305, 64933), (671, 29515), (3355, 5903)]