21072810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{63857}}^1$

素因数の和:63878

約数の個数: 32

約数和(自身を含む): 55173312

約数和(自身を除く): 34100502

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 66, 110, 165, 330, 63857, 127714, 191571, 319285, 383142, 638570, 702427, 957855, 1404854, 1915710, 2107281, 3512135, 4214562, 7024270, 10536405, 21072810]

約数ペア:

[(1, 21072810), (2, 10536405), (3, 7024270), (5, 4214562), (6, 3512135), (10, 2107281), (11, 1915710), (15, 1404854), (22, 957855), (30, 702427), (33, 638570), (55, 383142), (66, 319285), (110, 191571), (165, 127714), (330, 63857)]