642551

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{307}}^1$

素因数の和:350

約数の個数: 16

約数和(自身を含む): 827904

約数和(自身を除く): 185353

約数列:

[1, 7, 13, 23, 91, 161, 299, 307, 2093, 2149, 3991, 7061, 27937, 49427, 91793, 642551]

約数ペア:

[(1, 642551), (7, 91793), (13, 49427), (23, 27937), (91, 7061), (161, 3991), (299, 2149), (307, 2093)]