1625625

素因数分解:

$3^2\times 5^4\times {\mathrm{17}}^2$

素因数の和:60

約数の個数: 45

約数和(自身を含む): 3116971

約数和(自身を除く): 1491346

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, 3825, 4335, 5625, 6375, 7225, 10625, 13005, 19125, 21675, 31875, 36125, 65025, 95625, 108375, 180625, 325125, 541875, 1625625]

約数ペア:

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