20637617

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{389}}^1$

素因数の和:473

約数の個数: 32

約数和(自身を含む): 28304640

約数和(自身を除く): 7667023

約数列:

[1, 7, 11, 13, 53, 77, 91, 143, 371, 389, 583, 689, 1001, 2723, 4081, 4279, 4823, 5057, 7579, 20617, 29953, 35399, 53053, 55627, 144319, 226787, 268021, 389389, 1587509, 1876147, 2948231, 20637617]

約数ペア:

[(1, 20637617), (7, 2948231), (11, 1876147), (13, 1587509), (53, 389389), (77, 268021), (91, 226787), (143, 144319), (371, 55627), (389, 53053), (583, 35399), (689, 29953), (1001, 20617), (2723, 7579), (4081, 5057), (4279, 4823)]