19913975

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{587}}^1$

素因数の和:679

約数の個数: 24

約数和(自身を含む): 26248320

約数和(自身を除く): 6334345

約数列:

[1, 5, 23, 25, 59, 115, 295, 575, 587, 1357, 1475, 2935, 6785, 13501, 14675, 33925, 34633, 67505, 173165, 337525, 796559, 865825, 3982795, 19913975]

約数ペア:

[(1, 19913975), (5, 3982795), (23, 865825), (25, 796559), (59, 337525), (115, 173165), (295, 67505), (575, 34633), (587, 33925), (1357, 14675), (1475, 13501), (2935, 6785)]