20161125

素因数分解:

$3^2\times 5^3\times {\mathrm{17921}}^1$

素因数の和:17942

約数の個数: 24

約数和(自身を含む): 36345816

約数和(自身を除く): 16184691

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 125, 225, 375, 1125, 17921, 53763, 89605, 161289, 268815, 448025, 806445, 1344075, 2240125, 4032225, 6720375, 20161125]

約数ペア:

[(1, 20161125), (3, 6720375), (5, 4032225), (9, 2240125), (15, 1344075), (25, 806445), (45, 448025), (75, 268815), (125, 161289), (225, 89605), (375, 53763), (1125, 17921)]