991954341

素因数分解:

$3^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{139339}}^1$

素因数の和:139465

約数の個数: 24

約数和(自身を含む): 1652015040

約数和(自身を除く): 660060699

約数列:

[1, 3, 7, 9, 21, 63, 113, 339, 791, 1017, 2373, 7119, 139339, 418017, 975373, 1254051, 2926119, 8778357, 15745307, 47235921, 110217149, 141707763, 330651447, 991954341]

約数ペア:

[(1, 991954341), (3, 330651447), (7, 141707763), (9, 110217149), (21, 47235921), (63, 15745307), (113, 8778357), (339, 2926119), (791, 1254051), (1017, 975373), (2373, 418017), (7119, 139339)]