8120625

素因数分解:

$3^1\times 5^4\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:155

約数の個数: 40

約数和(自身を含む): 13945536

約数和(自身を除く): 5824911

約数列:

[1, 3, 5, 15, 25, 61, 71, 75, 125, 183, 213, 305, 355, 375, 625, 915, 1065, 1525, 1775, 1875, 4331, 4575, 5325, 7625, 8875, 12993, 21655, 22875, 26625, 38125, 44375, 64965, 108275, 114375, 133125, 324825, 541375, 1624125, 2706875, 8120625]

約数ペア:

[(1, 8120625), (3, 2706875), (5, 1624125), (15, 541375), (25, 324825), (61, 133125), (71, 114375), (75, 108275), (125, 64965), (183, 44375), (213, 38125), (305, 26625), (355, 22875), (375, 21655), (625, 12993), (915, 8875), (1065, 7625), (1525, 5325), (1775, 4575), (1875, 4331)]