20978982

素因数分解:

$2^1\times 3^2\times {\mathrm{719}}^1\times {\mathrm{1621}}^1$

素因数の和:2348

約数の個数: 24

約数和(自身を含む): 45545760

約数和(自身を除く): 24566778

約数列:

[1, 2, 3, 6, 9, 18, 719, 1438, 1621, 2157, 3242, 4314, 4863, 6471, 9726, 12942, 14589, 29178, 1165499, 2330998, 3496497, 6992994, 10489491, 20978982]

約数ペア:

[(1, 20978982), (2, 10489491), (3, 6992994), (6, 3496497), (9, 2330998), (18, 1165499), (719, 29178), (1438, 14589), (1621, 12942), (2157, 9726), (3242, 6471), (4314, 4863)]