20852979

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{3299}}^1$

素因数の和:3359

約数の個数: 24

約数和(自身を含む): 33105600

約数和(自身を除く): 12252621

約数列:

[1, 3, 7, 21, 43, 49, 129, 147, 301, 903, 2107, 3299, 6321, 9897, 23093, 69279, 141857, 161651, 425571, 484953, 992999, 2978997, 6950993, 20852979]

約数ペア:

[(1, 20852979), (3, 6950993), (7, 2978997), (21, 992999), (43, 484953), (49, 425571), (129, 161651), (147, 141857), (301, 69279), (903, 23093), (2107, 9897), (3299, 6321)]