21040943

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{379}}^1$

素因数の和:507

約数の個数: 24

約数和(自身を含む): 27031680

約数和(自身を除く): 5990737

約数列:

[1, 7, 11, 49, 77, 103, 379, 539, 721, 1133, 2653, 4169, 5047, 7931, 18571, 29183, 39037, 55517, 204281, 273259, 429407, 1912813, 3005849, 21040943]

約数ペア:

[(1, 21040943), (7, 3005849), (11, 1912813), (49, 429407), (77, 273259), (103, 204281), (379, 55517), (539, 39037), (721, 29183), (1133, 18571), (2653, 7931), (4169, 5047)]