18820818

素因数分解:

$2^1\times 3^2\times {\mathrm{61}}^2\times {\mathrm{281}}^1$

素因数の和:411

約数の個数: 36

約数和(自身を含む): 41605434

約数和(自身を除く): 22784616

約数列:

[1, 2, 3, 6, 9, 18, 61, 122, 183, 281, 366, 549, 562, 843, 1098, 1686, 2529, 3721, 5058, 7442, 11163, 17141, 22326, 33489, 34282, 51423, 66978, 102846, 154269, 308538, 1045601, 2091202, 3136803, 6273606, 9410409, 18820818]

約数ペア:

[(1, 18820818), (2, 9410409), (3, 6273606), (6, 3136803), (9, 2091202), (18, 1045601), (61, 308538), (122, 154269), (183, 102846), (281, 66978), (366, 51423), (549, 34282), (562, 33489), (843, 22326), (1098, 17141), (1686, 11163), (2529, 7442), (3721, 5058)]