20729665

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{239}}^1$

素因数の和:357

約数の個数: 32

約数和(自身を含む): 29030400

約数和(自身を除く): 8300735

約数列:

[1, 5, 11, 19, 55, 83, 95, 209, 239, 415, 913, 1045, 1195, 1577, 2629, 4541, 4565, 7885, 13145, 17347, 19837, 22705, 49951, 86735, 99185, 218207, 249755, 376903, 1091035, 1884515, 4145933, 20729665]

約数ペア:

[(1, 20729665), (5, 4145933), (11, 1884515), (19, 1091035), (55, 376903), (83, 249755), (95, 218207), (209, 99185), (239, 86735), (415, 49951), (913, 22705), (1045, 19837), (1195, 17347), (1577, 13145), (2629, 7885), (4541, 4565)]