64128100

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{15641}}^1$

素因数の和:15696

約数の個数: 36

約数和(自身を含む): 142561188

約数和(自身を除く): 78433088

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 15641, 31282, 62564, 78205, 156410, 312820, 391025, 641281, 782050, 1282562, 1564100, 2565124, 3206405, 6412810, 12825620, 16032025, 32064050, 64128100]

約数ペア:

[(1, 64128100), (2, 32064050), (4, 16032025), (5, 12825620), (10, 6412810), (20, 3206405), (25, 2565124), (41, 1564100), (50, 1282562), (82, 782050), (100, 641281), (164, 391025), (205, 312820), (410, 156410), (820, 78205), (1025, 62564), (2050, 31282), (4100, 15641)]