20915027

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{3511}}^1$

素因数の和:3578

約数の個数: 16

約数和(自身を含む): 25623552

約数和(自身を除く): 4708525

約数列:

[1, 7, 23, 37, 161, 259, 851, 3511, 5957, 24577, 80753, 129907, 565271, 909349, 2987861, 20915027]

約数ペア:

[(1, 20915027), (7, 2987861), (23, 909349), (37, 565271), (161, 129907), (259, 80753), (851, 24577), (3511, 5957)]