12987325

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{449}}^1$

素因数の和:561

約数の個数: 24

約数和(自身を含む): 17577000

約数和(自身を除く): 4589675

約数列:

[1, 5, 13, 25, 65, 89, 325, 445, 449, 1157, 2225, 2245, 5785, 5837, 11225, 28925, 29185, 39961, 145925, 199805, 519493, 999025, 2597465, 12987325]

約数ペア:

[(1, 12987325), (5, 2597465), (13, 999025), (25, 519493), (65, 199805), (89, 145925), (325, 39961), (445, 29185), (449, 28925), (1157, 11225), (2225, 5837), (2245, 5785)]