21121212

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{251443}}^1$

素因数の和:251457

約数の個数: 24

約数和(自身を含む): 56323456

約数和(自身を除く): 35202244

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 251443, 502886, 754329, 1005772, 1508658, 1760101, 3017316, 3520202, 5280303, 7040404, 10560606, 21121212]

約数ペア:

[(1, 21121212), (2, 10560606), (3, 7040404), (4, 5280303), (6, 3520202), (7, 3017316), (12, 1760101), (14, 1508658), (21, 1005772), (28, 754329), (42, 502886), (84, 251443)]