21210636874

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1213}}^1\times {\mathrm{73471}}^1$

素因数の和:74710

約数の個数: 32

約数和(自身を含む): 38532243456

約数和(自身を除く): 17321606582

約数列:

[1, 2, 7, 14, 17, 34, 119, 238, 1213, 2426, 8491, 16982, 20621, 41242, 73471, 144347, 146942, 288694, 514297, 1028594, 1249007, 2498014, 8743049, 17486098, 89120323, 178240646, 623842261, 1247684522, 1515045491, 3030090982, 10605318437, 21210636874]

約数ペア:

[(1, 21210636874), (2, 10605318437), (7, 3030090982), (14, 1515045491), (17, 1247684522), (34, 623842261), (119, 178240646), (238, 89120323), (1213, 17486098), (2426, 8743049), (8491, 2498014), (16982, 1249007), (20621, 1028594), (41242, 514297), (73471, 288694), (144347, 146942)]