638431311

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{22637}}^1$

素因数の和:22743

約数の個数: 32

約数和(自身を含む): 1043159040

約数和(自身を除く): 404727729

約数列:

[1, 3, 7, 17, 21, 51, 79, 119, 237, 357, 553, 1343, 1659, 4029, 9401, 22637, 28203, 67911, 158459, 384829, 475377, 1154487, 1788323, 2693803, 5364969, 8081409, 12518261, 30401491, 37554783, 91204473, 212810437, 638431311]

約数ペア:

[(1, 638431311), (3, 212810437), (7, 91204473), (17, 37554783), (21, 30401491), (51, 12518261), (79, 8081409), (119, 5364969), (237, 2693803), (357, 1788323), (553, 1154487), (1343, 475377), (1659, 384829), (4029, 158459), (9401, 67911), (22637, 28203)]