665661140

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1073647}}^1$

素因数の和:1073687

約数の個数: 24

約数和(自身を含む): 1442982912

約数和(自身を除く): 777321772

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 1073647, 2147294, 4294588, 5368235, 10736470, 21472940, 33283057, 66566114, 133132228, 166415285, 332830570, 665661140]

約数ペア:

[(1, 665661140), (2, 332830570), (4, 166415285), (5, 133132228), (10, 66566114), (20, 33283057), (31, 21472940), (62, 10736470), (124, 5368235), (155, 4294588), (310, 2147294), (620, 1073647)]