20943663

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{101}}^1\times {\mathrm{409}}^1$

素因数の和:539

約数の個数: 24

約数和(自身を含む): 30612240

約数和(自身を除く): 9668577

約数列:

[1, 3, 13, 39, 101, 169, 303, 409, 507, 1227, 1313, 3939, 5317, 15951, 17069, 41309, 51207, 69121, 123927, 207363, 537017, 1611051, 6981221, 20943663]

約数ペア:

[(1, 20943663), (3, 6981221), (13, 1611051), (39, 537017), (101, 207363), (169, 123927), (303, 69121), (409, 51207), (507, 41309), (1227, 17069), (1313, 15951), (3939, 5317)]