64991225

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{643}}^1$

素因数の和:977

約数の個数: 24

約数和(自身を含む): 87202752

約数和(自身を除く): 22211527

約数列:

[1, 5, 13, 25, 65, 311, 325, 643, 1555, 3215, 4043, 7775, 8359, 16075, 20215, 41795, 101075, 199973, 208975, 999865, 2599649, 4999325, 12998245, 64991225]

約数ペア:

[(1, 64991225), (5, 12998245), (13, 4999325), (25, 2599649), (65, 999865), (311, 208975), (325, 199973), (643, 101075), (1555, 41795), (3215, 20215), (4043, 16075), (7775, 8359)]