215522209

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{691}}^1\times {\mathrm{2621}}^1$

素因数の和:3336

約数の個数: 16

約数和(自身を含む): 261277056

約数和(自身を除く): 45754847

約数列:

[1, 7, 17, 119, 691, 2621, 4837, 11747, 18347, 44557, 82229, 311899, 1811111, 12677777, 30788887, 215522209]

約数ペア:

[(1, 215522209), (7, 30788887), (17, 12677777), (119, 1811111), (691, 311899), (2621, 82229), (4837, 44557), (11747, 18347)]