28987060

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{10427}}^1$

素因数の和:10575

約数の個数: 24

約数和(自身を含む): 61316640

約数和(自身を除く): 32329580

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 10427, 20854, 41708, 52135, 104270, 208540, 1449353, 2898706, 5797412, 7246765, 14493530, 28987060]

約数ペア:

[(1, 28987060), (2, 14493530), (4, 7246765), (5, 5797412), (10, 2898706), (20, 1449353), (139, 208540), (278, 104270), (556, 52135), (695, 41708), (1390, 20854), (2780, 10427)]