28408965

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{145687}}^1$

素因数の和:145708

約数の個数: 16

約数和(自身を含む): 48951168

約数和(自身を除く): 20542203

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 145687, 437061, 728435, 1893931, 2185305, 5681793, 9469655, 28408965]

約数ペア:

[(1, 28408965), (3, 9469655), (5, 5681793), (13, 2185305), (15, 1893931), (39, 728435), (65, 437061), (195, 145687)]