28638995

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{1019}}^1$

素因数の和:1115

約数の個数: 32

約数和(自身を含む): 43476480

約数和(自身を除く): 14837485

約数列:

[1, 5, 7, 11, 35, 55, 73, 77, 365, 385, 511, 803, 1019, 2555, 4015, 5095, 5621, 7133, 11209, 28105, 35665, 56045, 74387, 78463, 371935, 392315, 520709, 818257, 2603545, 4091285, 5727799, 28638995]

約数ペア:

[(1, 28638995), (5, 5727799), (7, 4091285), (11, 2603545), (35, 818257), (55, 520709), (73, 392315), (77, 371935), (365, 78463), (385, 74387), (511, 56045), (803, 35665), (1019, 28105), (2555, 11209), (4015, 7133), (5095, 5621)]