8128125

素因数分解:

$3^2\times 5^5\times {\mathrm{17}}^2$

素因数の和:65

約数の個数: 54

約数和(自身を含む): 15588846

約数和(自身を除く): 7460721

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 125, 153, 225, 255, 289, 375, 425, 625, 765, 867, 1125, 1275, 1445, 1875, 2125, 2601, 3125, 3825, 4335, 5625, 6375, 7225, 9375, 10625, 13005, 19125, 21675, 28125, 31875, 36125, 53125, 65025, 95625, 108375, 159375, 180625, 325125, 478125, 541875, 903125, 1625625, 2709375, 8128125]

約数ペア:

[(1, 8128125), (3, 2709375), (5, 1625625), (9, 903125), (15, 541875), (17, 478125), (25, 325125), (45, 180625), (51, 159375), (75, 108375), (85, 95625), (125, 65025), (153, 53125), (225, 36125), (255, 31875), (289, 28125), (375, 21675), (425, 19125), (625, 13005), (765, 10625), (867, 9375), (1125, 7225), (1275, 6375), (1445, 5625), (1875, 4335), (2125, 3825), (2601, 3125)]