28691415

素因数分解:

$3^4\times 5^1\times {\mathrm{70843}}^1$

素因数の和:70860

約数の個数: 20

約数和(自身を含む): 51432744

約数和(自身を除く): 22741329

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 70843, 212529, 354215, 637587, 1062645, 1912761, 3187935, 5738283, 9563805, 28691415]

約数ペア:

[(1, 28691415), (3, 9563805), (5, 5738283), (9, 3187935), (15, 1912761), (27, 1062645), (45, 637587), (81, 354215), (135, 212529), (405, 70843)]