28117640

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{6449}}^1$

素因数の和:6569

約数の個数: 32

約数和(自身を含む): 63855000

約数和(自身を除く): 35737360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 6449, 12898, 25796, 32245, 51592, 64490, 128980, 257960, 702941, 1405882, 2811764, 3514705, 5623528, 7029410, 14058820, 28117640]

約数ペア:

[(1, 28117640), (2, 14058820), (4, 7029410), (5, 5623528), (8, 3514705), (10, 2811764), (20, 1405882), (40, 702941), (109, 257960), (218, 128980), (436, 64490), (545, 51592), (872, 32245), (1090, 25796), (2180, 12898), (4360, 6449)]