90900875

素因数分解:

$5^3\times {\mathrm{13}}^3\times {\mathrm{331}}^1$

素因数の和:385

約数の個数: 32

約数和(自身を含む): 123264960

約数和(自身を除く): 32364085

約数列:

[1, 5, 13, 25, 65, 125, 169, 325, 331, 845, 1625, 1655, 2197, 4225, 4303, 8275, 10985, 21125, 21515, 41375, 54925, 55939, 107575, 274625, 279695, 537875, 727207, 1398475, 3636035, 6992375, 18180175, 90900875]

約数ペア:

[(1, 90900875), (5, 18180175), (13, 6992375), (25, 3636035), (65, 1398475), (125, 727207), (169, 537875), (325, 279695), (331, 274625), (845, 107575), (1625, 55939), (1655, 54925), (2197, 41375), (4225, 21515), (4303, 21125), (8275, 10985)]