28488175

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{3943}}^1$

素因数の和:3987

約数の個数: 18

約数和(自身を含む): 37535048

約数和(自身を除く): 9046873

約数列:

[1, 5, 17, 25, 85, 289, 425, 1445, 3943, 7225, 19715, 67031, 98575, 335155, 1139527, 1675775, 5697635, 28488175]

約数ペア:

[(1, 28488175), (5, 5697635), (17, 1675775), (25, 1139527), (85, 335155), (289, 98575), (425, 67031), (1445, 19715), (3943, 7225)]