19899145

素因数分解:

$5^1\times 7^3\times {\mathrm{41}}^1\times {\mathrm{283}}^1$

素因数の和:350

約数の個数: 32

約数和(自身を含む): 28627200

約数和(自身を除く): 8728055

約数列:

[1, 5, 7, 35, 41, 49, 205, 245, 283, 287, 343, 1415, 1435, 1715, 1981, 2009, 9905, 10045, 11603, 13867, 14063, 58015, 69335, 70315, 81221, 97069, 406105, 485345, 568547, 2842735, 3979829, 19899145]

約数ペア:

[(1, 19899145), (5, 3979829), (7, 2842735), (35, 568547), (41, 485345), (49, 406105), (205, 97069), (245, 81221), (283, 70315), (287, 69335), (343, 58015), (1415, 14063), (1435, 13867), (1715, 11603), (1981, 10045), (2009, 9905)]