21293975

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{1277}}^1$

素因数の和:1339

約数の個数: 24

約数和(自身を含む): 28524960

約数和(自身を除く): 7230985

約数列:

[1, 5, 23, 25, 29, 115, 145, 575, 667, 725, 1277, 3335, 6385, 16675, 29371, 31925, 37033, 146855, 185165, 734275, 851759, 925825, 4258795, 21293975]

約数ペア:

[(1, 21293975), (5, 4258795), (23, 925825), (25, 851759), (29, 734275), (115, 185165), (145, 146855), (575, 37033), (667, 31925), (725, 29371), (1277, 16675), (3335, 6385)]