31397191

素因数分解:

$7^3\times {\mathrm{239}}^1\times {\mathrm{383}}^1$

素因数の和:643

約数の個数: 16

約数和(自身を含む): 36864000

約数和(自身を除く): 5466809

約数列:

[1, 7, 49, 239, 343, 383, 1673, 2681, 11711, 18767, 81977, 91537, 131369, 640759, 4485313, 31397191]

約数ペア:

[(1, 31397191), (7, 4485313), (49, 640759), (239, 131369), (343, 91537), (383, 81977), (1673, 18767), (2681, 11711)]