17996875

素因数分解:

$5^5\times {\mathrm{13}}^1\times {\mathrm{443}}^1$

素因数の和:481

約数の個数: 24

約数和(自身を含む): 24279696

約数和(自身を除く): 6282821

約数列:

[1, 5, 13, 25, 65, 125, 325, 443, 625, 1625, 2215, 3125, 5759, 8125, 11075, 28795, 40625, 55375, 143975, 276875, 719875, 1384375, 3599375, 17996875]

約数ペア:

[(1, 17996875), (5, 3599375), (13, 1384375), (25, 719875), (65, 276875), (125, 143975), (325, 55375), (443, 40625), (625, 28795), (1625, 11075), (2215, 8125), (3125, 5759)]