20854570

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{4409}}^1$

素因数の和:4470

約数の個数: 32

約数和(自身を含む): 41912640

約数和(自身を除く): 21058070

約数列:

[1, 2, 5, 10, 11, 22, 43, 55, 86, 110, 215, 430, 473, 946, 2365, 4409, 4730, 8818, 22045, 44090, 48499, 96998, 189587, 242495, 379174, 484990, 947935, 1895870, 2085457, 4170914, 10427285, 20854570]

約数ペア:

[(1, 20854570), (2, 10427285), (5, 4170914), (10, 2085457), (11, 1895870), (22, 947935), (43, 484990), (55, 379174), (86, 242495), (110, 189587), (215, 96998), (430, 48499), (473, 44090), (946, 22045), (2365, 8818), (4409, 4730)]