20971268

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{4603}}^1$

素因数の和:4691

約数の個数: 24

約数和(自身を含む): 39447072

約数和(自身を除く): 18475804

約数列:

[1, 2, 4, 17, 34, 67, 68, 134, 268, 1139, 2278, 4556, 4603, 9206, 18412, 78251, 156502, 308401, 313004, 616802, 1233604, 5242817, 10485634, 20971268]

約数ペア:

[(1, 20971268), (2, 10485634), (4, 5242817), (17, 1233604), (34, 616802), (67, 313004), (68, 308401), (134, 156502), (268, 78251), (1139, 18412), (2278, 9206), (4556, 4603)]