28402075

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{311}}^1$

素因数の和:615

約数の個数: 24

約数和(自身を含む): 38185056

約数和(自身を除く): 9782981

約数列:

[1, 5, 13, 25, 65, 281, 311, 325, 1405, 1555, 3653, 4043, 7025, 7775, 18265, 20215, 87391, 91325, 101075, 436955, 1136083, 2184775, 5680415, 28402075]

約数ペア:

[(1, 28402075), (5, 5680415), (13, 2184775), (25, 1136083), (65, 436955), (281, 101075), (311, 91325), (325, 87391), (1405, 20215), (1555, 18265), (3653, 7775), (4043, 7025)]