20988918

素因数分解:

$2^1\times 3^2\times {\mathrm{853}}^1\times {\mathrm{1367}}^1$

素因数の和:2228

約数の個数: 24

約数和(自身を含む): 45562608

約数和(自身を除く): 24573690

約数列:

[1, 2, 3, 6, 9, 18, 853, 1367, 1706, 2559, 2734, 4101, 5118, 7677, 8202, 12303, 15354, 24606, 1166051, 2332102, 3498153, 6996306, 10494459, 20988918]

約数ペア:

[(1, 20988918), (2, 10494459), (3, 6996306), (6, 3498153), (9, 2332102), (18, 1166051), (853, 24606), (1367, 15354), (1706, 12303), (2559, 8202), (2734, 7677), (4101, 5118)]