25981820

素因数分解:

$2^2\times 5^1\times {\mathrm{997}}^1\times {\mathrm{1303}}^1$

素因数の和:2309

約数の個数: 24

約数和(自身を含む): 54658464

約数和(自身を除く): 28676644

約数列:

[1, 2, 4, 5, 10, 20, 997, 1303, 1994, 2606, 3988, 4985, 5212, 6515, 9970, 13030, 19940, 26060, 1299091, 2598182, 5196364, 6495455, 12990910, 25981820]

約数ペア:

[(1, 25981820), (2, 12990910), (4, 6495455), (5, 5196364), (10, 2598182), (20, 1299091), (997, 26060), (1303, 19940), (1994, 13030), (2606, 9970), (3988, 6515), (4985, 5212)]