20778858

素因数分解:

$2^1\times 3^2\times {\mathrm{211}}^1\times {\mathrm{5471}}^1$

素因数の和:5690

約数の個数: 24

約数和(自身を含む): 45242496

約数和(自身を除く): 24463638

約数列:

[1, 2, 3, 6, 9, 18, 211, 422, 633, 1266, 1899, 3798, 5471, 10942, 16413, 32826, 49239, 98478, 1154381, 2308762, 3463143, 6926286, 10389429, 20778858]

約数ペア:

[(1, 20778858), (2, 10389429), (3, 6926286), (6, 3463143), (9, 2308762), (18, 1154381), (211, 98478), (422, 49239), (633, 32826), (1266, 16413), (1899, 10942), (3798, 5471)]