21000456825

素因数分解:

$3^1\times 5^2\times {\mathrm{241}}^1\times {\mathrm{1161851}}^1$

素因数の和:1162105

約数の個数: 24

約数和(自身を含む): 34864854816

約数和(自身を除く): 13864397991

約数列:

[1, 3, 5, 15, 25, 75, 241, 723, 1205, 3615, 6025, 18075, 1161851, 3485553, 5809255, 17427765, 29046275, 87138825, 280006091, 840018273, 1400030455, 4200091365, 7000152275, 21000456825]

約数ペア:

[(1, 21000456825), (3, 7000152275), (5, 4200091365), (15, 1400030455), (25, 840018273), (75, 280006091), (241, 87138825), (723, 29046275), (1205, 17427765), (3615, 5809255), (6025, 3485553), (18075, 1161851)]