639730042

素因数分解:

$2^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{513427}}^1$

素因数の和:513525

約数の個数: 16

約数和(自身を含む): 1109004480

約数和(自身を除く): 469274438

約数列:

[1, 2, 7, 14, 89, 178, 623, 1246, 513427, 1026854, 3593989, 7187978, 45695003, 91390006, 319865021, 639730042]

約数ペア:

[(1, 639730042), (2, 319865021), (7, 91390006), (14, 45695003), (89, 7187978), (178, 3593989), (623, 1026854), (1246, 513427)]