20659555

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{661}}^1$

素因数の和:739

約数の個数: 32

約数和(自身を含む): 30504960

約数和(自身を除く): 9845405

約数列:

[1, 5, 7, 19, 35, 47, 95, 133, 235, 329, 661, 665, 893, 1645, 3305, 4465, 4627, 6251, 12559, 23135, 31067, 31255, 62795, 87913, 155335, 217469, 439565, 590273, 1087345, 2951365, 4131911, 20659555]

約数ペア:

[(1, 20659555), (5, 4131911), (7, 2951365), (19, 1087345), (35, 590273), (47, 439565), (95, 217469), (133, 155335), (235, 87913), (329, 62795), (661, 31255), (665, 31067), (893, 23135), (1645, 12559), (3305, 6251), (4465, 4627)]