261645215

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{236783}}^1$

素因数の和:236818

約数の個数: 16

約数和(自身を含む): 358017408

約数和(自身を除く): 96372193

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 236783, 1183915, 3078179, 4025311, 15390895, 20126555, 52329043, 261645215]

約数ペア:

[(1, 261645215), (5, 52329043), (13, 20126555), (17, 15390895), (65, 4025311), (85, 3078179), (221, 1183915), (1105, 236783)]