209212017

素因数分解:

$3^1\times 7^2\times {\mathrm{313}}^1\times {\mathrm{4547}}^1$

素因数の和:4877

約数の個数: 24

約数和(自身を含む): 325600416

約数和(自身を除く): 116388399

約数列:

[1, 3, 7, 21, 49, 147, 313, 939, 2191, 4547, 6573, 13641, 15337, 31829, 46011, 95487, 222803, 668409, 1423211, 4269633, 9962477, 29887431, 69737339, 209212017]

約数ペア:

[(1, 209212017), (3, 69737339), (7, 29887431), (21, 9962477), (49, 4269633), (147, 1423211), (313, 668409), (939, 222803), (2191, 95487), (4547, 46011), (6573, 31829), (13641, 15337)]