19781518

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{4019}}^1$

素因数の和:4151

約数の個数: 16

約数和(自身を含む): 31259520

約数和(自身を除く): 11478002

約数列:

[1, 2, 23, 46, 107, 214, 2461, 4019, 4922, 8038, 92437, 184874, 430033, 860066, 9890759, 19781518]

約数ペア:

[(1, 19781518), (2, 9890759), (23, 860066), (46, 430033), (107, 184874), (214, 92437), (2461, 8038), (4019, 4922)]