18639966

素因数分解:

$2^1\times 3^1\times {\mathrm{73}}^1\times {\mathrm{42557}}^1$

素因数の和:42635

約数の個数: 16

約数和(自身を含む): 37791504

約数和(自身を除く): 19151538

約数列:

[1, 2, 3, 6, 73, 146, 219, 438, 42557, 85114, 127671, 255342, 3106661, 6213322, 9319983, 18639966]

約数ペア:

[(1, 18639966), (2, 9319983), (3, 6213322), (6, 3106661), (73, 255342), (146, 127671), (219, 85114), (438, 42557)]