19722843

素因数分解:

$3^2\times 7^3\times {\mathrm{6389}}^1$

素因数の和:6416

約数の個数: 24

約数和(自身を含む): 33228000

約数和(自身を除く): 13505157

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 6389, 19167, 44723, 57501, 134169, 313061, 402507, 939183, 2191427, 2817549, 6574281, 19722843]

約数ペア:

[(1, 19722843), (3, 6574281), (7, 2817549), (9, 2191427), (21, 939183), (49, 402507), (63, 313061), (147, 134169), (343, 57501), (441, 44723), (1029, 19167), (3087, 6389)]