21284012

素因数分解:

$2^2\times {\mathrm{107}}^1\times {\mathrm{223}}^2$

素因数の和:557

約数の個数: 18

約数和(自身を含む): 37764468

約数和(自身を除く): 16480456

約数列:

[1, 2, 4, 107, 214, 223, 428, 446, 892, 23861, 47722, 49729, 95444, 99458, 198916, 5321003, 10642006, 21284012]

約数ペア:

[(1, 21284012), (2, 10642006), (4, 5321003), (107, 198916), (214, 99458), (223, 95444), (428, 49729), (446, 47722), (892, 23861)]