20915279

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{1823}}^1$

素因数の和:1990

約数の個数: 16

約数和(自身を含む): 26265600

約数和(自身を除く): 5350321

約数列:

[1, 7, 11, 77, 149, 1043, 1639, 1823, 11473, 12761, 20053, 140371, 271627, 1901389, 2987897, 20915279]

約数ペア:

[(1, 20915279), (7, 2987897), (11, 1901389), (77, 271627), (149, 140371), (1043, 20053), (1639, 12761), (1823, 11473)]