21238088

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{269}}^1$

素因数の和:485

約数の個数: 32

約数和(自身を含む): 40824000

約数和(自身を除く): 19585912

約数列:

[1, 2, 4, 8, 71, 139, 142, 269, 278, 284, 538, 556, 568, 1076, 1112, 2152, 9869, 19099, 19738, 37391, 38198, 39476, 74782, 76396, 78952, 149564, 152792, 299128, 2654761, 5309522, 10619044, 21238088]

約数ペア:

[(1, 21238088), (2, 10619044), (4, 5309522), (8, 2654761), (71, 299128), (139, 152792), (142, 149564), (269, 78952), (278, 76396), (284, 74782), (538, 39476), (556, 38198), (568, 37391), (1076, 19738), (1112, 19099), (2152, 9869)]