18828405

素因数分解:

$3^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{1489}}^1$

素因数の和:1781

約数の個数: 24

約数和(自身を含む): 32774040

約数和(自身を除く): 13945635

約数列:

[1, 3, 5, 9, 15, 45, 281, 843, 1405, 1489, 2529, 4215, 4467, 7445, 12645, 13401, 22335, 67005, 418409, 1255227, 2092045, 3765681, 6276135, 18828405]

約数ペア:

[(1, 18828405), (3, 6276135), (5, 3765681), (9, 2092045), (15, 1255227), (45, 418409), (281, 67005), (843, 22335), (1405, 13401), (1489, 12645), (2529, 7445), (4215, 4467)]