68908780

素因数分解:

$2^2\times 5^1\times {\mathrm{1741}}^1\times {\mathrm{1979}}^1$

素因数の和:3729

約数の個数: 24

約数和(自身を含む): 144864720

約数和(自身を除く): 75955940

約数列:

[1, 2, 4, 5, 10, 20, 1741, 1979, 3482, 3958, 6964, 7916, 8705, 9895, 17410, 19790, 34820, 39580, 3445439, 6890878, 13781756, 17227195, 34454390, 68908780]

約数ペア:

[(1, 68908780), (2, 34454390), (4, 17227195), (5, 13781756), (10, 6890878), (20, 3445439), (1741, 39580), (1979, 34820), (3482, 19790), (3958, 17410), (6964, 9895), (7916, 8705)]