249885

素因数分解:

$3^4\times 5^1\times {\mathrm{617}}^1$

素因数の和:634

約数の個数: 20

約数和(自身を含む): 448668

約数和(自身を除く): 198783

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 617, 1851, 3085, 5553, 9255, 16659, 27765, 49977, 83295, 249885]

約数ペア:

[(1, 249885), (3, 83295), (5, 49977), (9, 27765), (15, 16659), (27, 9255), (45, 5553), (81, 3085), (135, 1851), (405, 617)]