664821493

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{21929}}^1$

素因数の和:22068

約数の個数: 16

約数和(自身を含む): 783164160

約数和(自身を除く): 118342667

約数列:

[1, 7, 61, 71, 427, 497, 4331, 21929, 30317, 153503, 1337669, 1556959, 9363683, 10898713, 94974499, 664821493]

約数ペア:

[(1, 664821493), (7, 94974499), (61, 10898713), (71, 9363683), (427, 1556959), (497, 1337669), (4331, 153503), (21929, 30317)]