20090818

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{3821}}^1$

素因数の和:4073

約数の個数: 16

約数和(自身を含む): 33022080

約数和(自身を除く): 12931262

約数列:

[1, 2, 11, 22, 239, 478, 2629, 3821, 5258, 7642, 42031, 84062, 913219, 1826438, 10045409, 20090818]

約数ペア:

[(1, 20090818), (2, 10045409), (11, 1826438), (22, 913219), (239, 84062), (478, 42031), (2629, 7642), (3821, 5258)]