20357793

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{557}}^1$

素因数の和:725

約数の個数: 24

約数和(自身を含む): 30640896

約数和(自身を除く): 10283103

約数列:

[1, 3, 9, 31, 93, 131, 279, 393, 557, 1179, 1671, 4061, 5013, 12183, 17267, 36549, 51801, 72967, 155403, 218901, 656703, 2261977, 6785931, 20357793]

約数ペア:

[(1, 20357793), (3, 6785931), (9, 2261977), (31, 656703), (93, 218901), (131, 155403), (279, 72967), (393, 51801), (557, 36549), (1179, 17267), (1671, 12183), (4061, 5013)]