21221356

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{6917}}^1$

素因数の和:6993

約数の個数: 24

約数和(自身を含む): 40677840

約数和(自身を除く): 19456484

約数列:

[1, 2, 4, 13, 26, 52, 59, 118, 236, 767, 1534, 3068, 6917, 13834, 27668, 89921, 179842, 359684, 408103, 816206, 1632412, 5305339, 10610678, 21221356]

約数ペア:

[(1, 21221356), (2, 10610678), (4, 5305339), (13, 1632412), (26, 816206), (52, 408103), (59, 359684), (118, 179842), (236, 89921), (767, 27668), (1534, 13834), (3068, 6917)]