20137481

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{313}}^1$

素因数の和:441

約数の個数: 24

約数和(自身を含む): 25558344

約数和(自身を除く): 5420863

約数列:

[1, 7, 13, 49, 91, 101, 313, 637, 707, 1313, 2191, 4069, 4949, 9191, 15337, 28483, 31613, 64337, 199381, 221291, 410969, 1549037, 2876783, 20137481]

約数ペア:

[(1, 20137481), (7, 2876783), (13, 1549037), (49, 410969), (91, 221291), (101, 199381), (313, 64337), (637, 31613), (707, 28483), (1313, 15337), (2191, 9191), (4069, 4949)]