21297735

素因数分解:

$3^6\times 5^1\times {\mathrm{5843}}^1$

素因数の和:5866

約数の個数: 28

約数和(自身を含む): 38324952

約数和(自身を除く): 17027217

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 3645, 5843, 17529, 29215, 52587, 87645, 157761, 262935, 473283, 788805, 1419849, 2366415, 4259547, 7099245, 21297735]

約数ペア:

[(1, 21297735), (3, 7099245), (5, 4259547), (9, 2366415), (15, 1419849), (27, 788805), (45, 473283), (81, 262935), (135, 157761), (243, 87645), (405, 52587), (729, 29215), (1215, 17529), (3645, 5843)]