1811875

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{223}}^1$

素因数の和:256

約数の個数: 20

約数和(自身を含む): 2449216

約数和(自身を除く): 637341

約数列:

[1, 5, 13, 25, 65, 125, 223, 325, 625, 1115, 1625, 2899, 5575, 8125, 14495, 27875, 72475, 139375, 362375, 1811875]

約数ペア:

[(1, 1811875), (5, 362375), (13, 139375), (25, 72475), (65, 27875), (125, 14495), (223, 8125), (325, 5575), (625, 2899), (1115, 1625)]