20790873

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{2137}}^1$

素因数の和:2213

約数の個数: 24

約数和(自身を含む): 32018688

約数和(自身を除く): 11227815

約数列:

[1, 3, 9, 23, 47, 69, 141, 207, 423, 1081, 2137, 3243, 6411, 9729, 19233, 49151, 100439, 147453, 301317, 442359, 903951, 2310097, 6930291, 20790873]

約数ペア:

[(1, 20790873), (3, 6930291), (9, 2310097), (23, 903951), (47, 442359), (69, 301317), (141, 147453), (207, 100439), (423, 49151), (1081, 19233), (2137, 9729), (3243, 6411)]