20663505

素因数分解:

$3^6\times 5^1\times {\mathrm{5669}}^1$

素因数の和:5692

約数の個数: 28

約数和(自身を含む): 37183860

約数和(自身を除く): 16520355

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 3645, 5669, 17007, 28345, 51021, 85035, 153063, 255105, 459189, 765315, 1377567, 2295945, 4132701, 6887835, 20663505]

約数ペア:

[(1, 20663505), (3, 6887835), (5, 4132701), (9, 2295945), (15, 1377567), (27, 765315), (45, 459189), (81, 255105), (135, 153063), (243, 85035), (405, 51021), (729, 28345), (1215, 17007), (3645, 5669)]