21351620

素因数分解:

$2^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{4703}}^1$

素因数の和:4939

約数の個数: 24

約数和(自身を含む): 45045504

約数和(自身を除く): 23693884

約数列:

[1, 2, 4, 5, 10, 20, 227, 454, 908, 1135, 2270, 4540, 4703, 9406, 18812, 23515, 47030, 94060, 1067581, 2135162, 4270324, 5337905, 10675810, 21351620]

約数ペア:

[(1, 21351620), (2, 10675810), (4, 5337905), (5, 4270324), (10, 2135162), (20, 1067581), (227, 94060), (454, 47030), (908, 23515), (1135, 18812), (2270, 9406), (4540, 4703)]