28429375

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{3499}}^1$

素因数の和:3532

約数の個数: 20

約数和(自身を含む): 38269000

約数和(自身を除く): 9839625

約数列:

[1, 5, 13, 25, 65, 125, 325, 625, 1625, 3499, 8125, 17495, 45487, 87475, 227435, 437375, 1137175, 2186875, 5685875, 28429375]

約数ペア:

[(1, 28429375), (5, 5685875), (13, 2186875), (25, 1137175), (65, 437375), (125, 227435), (325, 87475), (625, 45487), (1625, 17495), (3499, 8125)]