20217207

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{7919}}^1$

素因数の和:7982

約数の個数: 16

約数和(自身を含む): 28892160

約数和(自身を除く): 8674953

約数列:

[1, 3, 23, 37, 69, 111, 851, 2553, 7919, 23757, 182137, 293003, 546411, 879009, 6739069, 20217207]

約数ペア:

[(1, 20217207), (3, 6739069), (23, 879009), (37, 546411), (69, 293003), (111, 182137), (851, 23757), (2553, 7919)]