19209813

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{7687}}^1$

素因数の和:7721

約数の個数: 24

約数和(自身を含む): 31551552

約数和(自身を除く): 12341739

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 2499, 7687, 23061, 53809, 130679, 161427, 376663, 392037, 914753, 1129989, 2744259, 6403271, 19209813]

約数ペア:

[(1, 19209813), (3, 6403271), (7, 2744259), (17, 1129989), (21, 914753), (49, 392037), (51, 376663), (119, 161427), (147, 130679), (357, 53809), (833, 23061), (2499, 7687)]