28642725

素因数分解:

$3^2\times 5^2\times {\mathrm{127301}}^1$

素因数の和:127317

約数の個数: 18

約数和(自身を含む): 51302706

約数和(自身を除く): 22659981

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 127301, 381903, 636505, 1145709, 1909515, 3182525, 5728545, 9547575, 28642725]

約数ペア:

[(1, 28642725), (3, 9547575), (5, 5728545), (9, 3182525), (15, 1909515), (25, 1145709), (45, 636505), (75, 381903), (225, 127301)]