20137221

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{557}}^1$

素因数の和:682

約数の個数: 32

約数和(自身を含む): 32497920

約数和(自身を除く): 12360699

約数列:

[1, 3, 9, 13, 27, 39, 103, 117, 309, 351, 557, 927, 1339, 1671, 2781, 4017, 5013, 7241, 12051, 15039, 21723, 36153, 57371, 65169, 172113, 195507, 516339, 745823, 1549017, 2237469, 6712407, 20137221]

約数ペア:

[(1, 20137221), (3, 6712407), (9, 2237469), (13, 1549017), (27, 745823), (39, 516339), (103, 195507), (117, 172113), (309, 65169), (351, 57371), (557, 36153), (927, 21723), (1339, 15039), (1671, 12051), (2781, 7241), (4017, 5013)]