28916875

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{3559}}^1$

素因数の和:3592

約数の個数: 20

約数和(自身を含む): 38925040

約数和(自身を除く): 10008165

約数列:

[1, 5, 13, 25, 65, 125, 325, 625, 1625, 3559, 8125, 17795, 46267, 88975, 231335, 444875, 1156675, 2224375, 5783375, 28916875]

約数ペア:

[(1, 28916875), (5, 5783375), (13, 2224375), (25, 1156675), (65, 444875), (125, 231335), (325, 88975), (625, 46267), (1625, 17795), (3559, 8125)]