21296715

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{337}}^1\times {\mathrm{383}}^1$

素因数の和:739

約数の個数: 32

約数和(自身を含む): 37380096

約数和(自身を除く): 16083381

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 337, 383, 1011, 1149, 1685, 1915, 3707, 4213, 5055, 5745, 11121, 12639, 18535, 21065, 55605, 63195, 129071, 387213, 645355, 1419781, 1936065, 4259343, 7098905, 21296715]

約数ペア:

[(1, 21296715), (3, 7098905), (5, 4259343), (11, 1936065), (15, 1419781), (33, 645355), (55, 387213), (165, 129071), (337, 63195), (383, 55605), (1011, 21065), (1149, 18535), (1685, 12639), (1915, 11121), (3707, 5745), (4213, 5055)]