28128525

素因数分解:

$3^1\times 5^2\times {\mathrm{113}}^1\times {\mathrm{3319}}^1$

素因数の和:3445

約数の個数: 24

約数和(自身を含む): 46931520

約数和(自身を除く): 18802995

約数列:

[1, 3, 5, 15, 25, 75, 113, 339, 565, 1695, 2825, 3319, 8475, 9957, 16595, 49785, 82975, 248925, 375047, 1125141, 1875235, 5625705, 9376175, 28128525]

約数ペア:

[(1, 28128525), (3, 9376175), (5, 5625705), (15, 1875235), (25, 1125141), (75, 375047), (113, 248925), (339, 82975), (565, 49785), (1695, 16595), (2825, 9957), (3319, 8475)]