20101220

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4507}}^1$

素因数の和:4739

約数の個数: 24

約数和(自身を含む): 42411264

約数和(自身を除く): 22310044

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4460, 4507, 9014, 18028, 22535, 45070, 90140, 1005061, 2010122, 4020244, 5025305, 10050610, 20101220]

約数ペア:

[(1, 20101220), (2, 10050610), (4, 5025305), (5, 4020244), (10, 2010122), (20, 1005061), (223, 90140), (446, 45070), (892, 22535), (1115, 18028), (2230, 9014), (4460, 4507)]