81121160

素因数分解:

$2^3\times 5^1\times {\mathrm{379}}^1\times {\mathrm{5351}}^1$

素因数の和:5741

約数の個数: 32

約数和(自身を含む): 183038400

約数和(自身を除く): 101917240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 379, 758, 1516, 1895, 3032, 3790, 5351, 7580, 10702, 15160, 21404, 26755, 42808, 53510, 107020, 214040, 2028029, 4056058, 8112116, 10140145, 16224232, 20280290, 40560580, 81121160]

約数ペア:

[(1, 81121160), (2, 40560580), (4, 20280290), (5, 16224232), (8, 10140145), (10, 8112116), (20, 4056058), (40, 2028029), (379, 214040), (758, 107020), (1516, 53510), (1895, 42808), (3032, 26755), (3790, 21404), (5351, 15160), (7580, 10702)]