201990512870

素因数分解:

$2^1\times 5^1\times {\mathrm{1297}}^1\times {\mathrm{15573671}}^1$

素因数の和:15574975

約数の個数: 16

約数和(自身を含む): 363863272608

約数和(自身を除く): 161872759738

約数列:

[1, 2, 5, 10, 1297, 2594, 6485, 12970, 15573671, 31147342, 77868355, 155736710, 20199051287, 40398102574, 100995256435, 201990512870]

約数ペア:

[(1, 201990512870), (2, 100995256435), (5, 40398102574), (10, 20199051287), (1297, 155736710), (2594, 77868355), (6485, 31147342), (12970, 15573671)]