20977970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{12413}}^1$

素因数の和:12446

約数の個数: 24

約数和(自身を含む): 40891716

約数和(自身を除く): 19913746

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 12413, 24826, 62065, 124130, 161369, 322738, 806845, 1613690, 2097797, 4195594, 10488985, 20977970]

約数ペア:

[(1, 20977970), (2, 10488985), (5, 4195594), (10, 2097797), (13, 1613690), (26, 806845), (65, 322738), (130, 161369), (169, 124130), (338, 62065), (845, 24826), (1690, 12413)]