28728225

素因数分解:

$3^2\times 5^2\times {\mathrm{127681}}^1$

素因数の和:127697

約数の個数: 18

約数和(自身を含む): 51455846

約数和(自身を除く): 22727621

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 127681, 383043, 638405, 1149129, 1915215, 3192025, 5745645, 9576075, 28728225]

約数ペア:

[(1, 28728225), (3, 9576075), (5, 5745645), (9, 3192025), (15, 1915215), (25, 1149129), (45, 638405), (75, 383043), (225, 127681)]