28881818

素因数分解:

$2^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{20029}}^1$

素因数の和:20141

約数の個数: 16

約数和(自身を含む): 49994880

約数和(自身を除く): 21113062

約数列:

[1, 2, 7, 14, 103, 206, 721, 1442, 20029, 40058, 140203, 280406, 2062987, 4125974, 14440909, 28881818]

約数ペア:

[(1, 28881818), (2, 14440909), (7, 4125974), (14, 2062987), (103, 280406), (206, 140203), (721, 40058), (1442, 20029)]