28136875

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{3463}}^1$

素因数の和:3496

約数の個数: 20

約数和(自身を含む): 37875376

約数和(自身を除く): 9738501

約数列:

[1, 5, 13, 25, 65, 125, 325, 625, 1625, 3463, 8125, 17315, 45019, 86575, 225095, 432875, 1125475, 2164375, 5627375, 28136875]

約数ペア:

[(1, 28136875), (5, 5627375), (13, 2164375), (25, 1125475), (65, 432875), (125, 225095), (325, 86575), (625, 45019), (1625, 17315), (3463, 8125)]