21619146645

素因数分解:

$3^4\times 5^1\times {\mathrm{53380609}}^1$

素因数の和:53380626

約数の個数: 20

約数和(自身を含む): 38754322860

約数和(自身を除く): 17135176215

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 53380609, 160141827, 266903045, 480425481, 800709135, 1441276443, 2402127405, 4323829329, 7206382215, 21619146645]

約数ペア:

[(1, 21619146645), (3, 7206382215), (5, 4323829329), (9, 2402127405), (15, 1441276443), (27, 800709135), (45, 480425481), (81, 266903045), (135, 160141827), (405, 53380609)]