2160925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:193

約数の個数: 24

約数和(自身を含む): 2959880

約数和(自身を除く): 798955

約数列:

[1, 5, 13, 25, 61, 65, 109, 305, 325, 545, 793, 1417, 1525, 2725, 3965, 6649, 7085, 19825, 33245, 35425, 86437, 166225, 432185, 2160925]

約数ペア:

[(1, 2160925), (5, 432185), (13, 166225), (25, 86437), (61, 35425), (65, 33245), (109, 19825), (305, 7085), (325, 6649), (545, 3965), (793, 2725), (1417, 1525)]