12381020

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{3943}}^1$

素因数の和:4109

約数の個数: 24

約数和(自身を含む): 26172384

約数和(自身を除く): 13791364

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 3943, 7886, 15772, 19715, 39430, 78860, 619051, 1238102, 2476204, 3095255, 6190510, 12381020]

約数ペア:

[(1, 12381020), (2, 6190510), (4, 3095255), (5, 2476204), (10, 1238102), (20, 619051), (157, 78860), (314, 39430), (628, 19715), (785, 15772), (1570, 7886), (3140, 3943)]