18965625

素因数分解:

$3^1\times 5^5\times 7^1\times {\mathrm{17}}^2$

素因数の和:69

約数の個数: 72

約数和(自身を含む): 38372544

約数和(自身を除く): 19406919

約数列:

[1, 3, 5, 7, 15, 17, 21, 25, 35, 51, 75, 85, 105, 119, 125, 175, 255, 289, 357, 375, 425, 525, 595, 625, 867, 875, 1275, 1445, 1785, 1875, 2023, 2125, 2625, 2975, 3125, 4335, 4375, 6069, 6375, 7225, 8925, 9375, 10115, 10625, 13125, 14875, 21675, 21875, 30345, 31875, 36125, 44625, 50575, 53125, 65625, 74375, 108375, 151725, 159375, 180625, 223125, 252875, 371875, 541875, 758625, 903125, 1115625, 1264375, 2709375, 3793125, 6321875, 18965625]

約数ペア:

[(1, 18965625), (3, 6321875), (5, 3793125), (7, 2709375), (15, 1264375), (17, 1115625), (21, 903125), (25, 758625), (35, 541875), (51, 371875), (75, 252875), (85, 223125), (105, 180625), (119, 159375), (125, 151725), (175, 108375), (255, 74375), (289, 65625), (357, 53125), (375, 50575), (425, 44625), (525, 36125), (595, 31875), (625, 30345), (867, 21875), (875, 21675), (1275, 14875), (1445, 13125), (1785, 10625), (1875, 10115), (2023, 9375), (2125, 8925), (2625, 7225), (2975, 6375), (3125, 6069), (4335, 4375)]