20529225

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{3967}}^1$

素因数の和:4006

約数の個数: 36

約数和(自身を含む): 38378496

約数和(自身を除く): 17849271

約数列:

[1, 3, 5, 9, 15, 23, 25, 45, 69, 75, 115, 207, 225, 345, 575, 1035, 1725, 3967, 5175, 11901, 19835, 35703, 59505, 91241, 99175, 178515, 273723, 297525, 456205, 821169, 892575, 1368615, 2281025, 4105845, 6843075, 20529225]

約数ペア:

[(1, 20529225), (3, 6843075), (5, 4105845), (9, 2281025), (15, 1368615), (23, 892575), (25, 821169), (45, 456205), (69, 297525), (75, 273723), (115, 178515), (207, 99175), (225, 91241), (345, 59505), (575, 35703), (1035, 19835), (1725, 11901), (3967, 5175)]