639830

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{587}}^1$

素因数の和:703

約数の個数: 16

約数和(自身を含む): 1164240

約数和(自身を除く): 524410

約数列:

[1, 2, 5, 10, 109, 218, 545, 587, 1090, 1174, 2935, 5870, 63983, 127966, 319915, 639830]

約数ペア:

[(1, 639830), (2, 319915), (5, 127966), (10, 63983), (109, 5870), (218, 2935), (545, 1174), (587, 1090)]