21771827

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1303}}^1$

素因数の和:1359

約数の個数: 24

約数和(自身を含む): 28541952

約数和(自身を除く): 6770125

約数列:

[1, 7, 11, 31, 49, 77, 217, 341, 539, 1303, 1519, 2387, 9121, 14333, 16709, 40393, 63847, 100331, 282751, 444323, 702317, 1979257, 3110261, 21771827]

約数ペア:

[(1, 21771827), (7, 3110261), (11, 1979257), (31, 702317), (49, 444323), (77, 282751), (217, 100331), (341, 63847), (539, 40393), (1303, 16709), (1519, 14333), (2387, 9121)]