639474479

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{27541}}^1$

素因数の和:27686

約数の個数: 16

約数和(自身を含む): 761481216

約数和(自身を除く): 122006737

約数列:

[1, 7, 31, 107, 217, 749, 3317, 23219, 27541, 192787, 853771, 2946887, 5976397, 20628209, 91353497, 639474479]

約数ペア:

[(1, 639474479), (7, 91353497), (31, 20628209), (107, 5976397), (217, 2946887), (749, 853771), (3317, 192787), (23219, 27541)]