25540660

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{4969}}^1$

素因数の和:5235

約数の個数: 24

約数和(自身を含む): 53854920

約数和(自身を除く): 28314260

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 4969, 5140, 9938, 19876, 24845, 49690, 99380, 1277033, 2554066, 5108132, 6385165, 12770330, 25540660]

約数ペア:

[(1, 25540660), (2, 12770330), (4, 6385165), (5, 5108132), (10, 2554066), (20, 1277033), (257, 99380), (514, 49690), (1028, 24845), (1285, 19876), (2570, 9938), (4969, 5140)]