17990105

素因数分解:

$5^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{757}}^1$

素因数の和:873

約数の個数: 24

約数和(自身を含む): 25405128

約数和(自身を除く): 7415023

約数列:

[1, 5, 7, 35, 49, 97, 245, 485, 679, 757, 3395, 3785, 4753, 5299, 23765, 26495, 37093, 73429, 185465, 367145, 514003, 2570015, 3598021, 17990105]

約数ペア:

[(1, 17990105), (5, 3598021), (7, 2570015), (35, 514003), (49, 367145), (97, 185465), (245, 73429), (485, 37093), (679, 26495), (757, 23765), (3395, 5299), (3785, 4753)]