20421453

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{857}}^1$

素因数の和:933

約数の個数: 24

約数和(自身を含む): 30146688

約数和(自身を除く): 9725235

約数列:

[1, 3, 13, 39, 47, 141, 169, 507, 611, 857, 1833, 2571, 7943, 11141, 23829, 33423, 40279, 120837, 144833, 434499, 523627, 1570881, 6807151, 20421453]

約数ペア:

[(1, 20421453), (3, 6807151), (13, 1570881), (39, 523627), (47, 434499), (141, 144833), (169, 120837), (507, 40279), (611, 33423), (857, 23829), (1833, 11141), (2571, 7943)]