81965625

素因数分解:

$3^1\times 5^5\times 7^1\times {\mathrm{1249}}^1$

素因数の和:1284

約数の個数: 48

約数和(自身を含む): 156240000

約数和(自身を除く): 74274375

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 125, 175, 375, 525, 625, 875, 1249, 1875, 2625, 3125, 3747, 4375, 6245, 8743, 9375, 13125, 18735, 21875, 26229, 31225, 43715, 65625, 93675, 131145, 156125, 218575, 468375, 655725, 780625, 1092875, 2341875, 3278625, 3903125, 5464375, 11709375, 16393125, 27321875, 81965625]

約数ペア:

[(1, 81965625), (3, 27321875), (5, 16393125), (7, 11709375), (15, 5464375), (21, 3903125), (25, 3278625), (35, 2341875), (75, 1092875), (105, 780625), (125, 655725), (175, 468375), (375, 218575), (525, 156125), (625, 131145), (875, 93675), (1249, 65625), (1875, 43715), (2625, 31225), (3125, 26229), (3747, 21875), (4375, 18735), (6245, 13125), (8743, 9375)]