21134555440

素因数分解:

$2^4\times 5^1\times {\mathrm{264181943}}^1$

素因数の和:264181956

約数の個数: 20

約数和(自身を含む): 49137841584

約数和(自身を除く): 28003286144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 264181943, 528363886, 1056727772, 1320909715, 2113455544, 2641819430, 4226911088, 5283638860, 10567277720, 21134555440]

約数ペア:

[(1, 21134555440), (2, 10567277720), (4, 5283638860), (5, 4226911088), (8, 2641819430), (10, 2113455544), (16, 1320909715), (20, 1056727772), (40, 528363886), (80, 264181943)]