215566515

素因数分解:

$3^5\times 5^1\times {\mathrm{177421}}^1$

素因数の和:177441

約数の個数: 24

約数和(自身を含む): 387489648

約数和(自身を除く): 171923133

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 177421, 532263, 887105, 1596789, 2661315, 4790367, 7983945, 14371101, 23951835, 43113303, 71855505, 215566515]

約数ペア:

[(1, 215566515), (3, 71855505), (5, 43113303), (9, 23951835), (15, 14371101), (27, 7983945), (45, 4790367), (81, 2661315), (135, 1596789), (243, 887105), (405, 532263), (1215, 177421)]