40638040

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{7309}}^1$

素因数の和:7459

約数の個数: 32

約数和(自身を含む): 92106000

約数和(自身を除く): 51467960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 7309, 14618, 29236, 36545, 58472, 73090, 146180, 292360, 1015951, 2031902, 4063804, 5079755, 8127608, 10159510, 20319020, 40638040]

約数ペア:

[(1, 40638040), (2, 20319020), (4, 10159510), (5, 8127608), (8, 5079755), (10, 4063804), (20, 2031902), (40, 1015951), (139, 292360), (278, 146180), (556, 73090), (695, 58472), (1112, 36545), (1390, 29236), (2780, 14618), (5560, 7309)]