21779128

素因数分解:

$2^3\times 7^3\times {\mathrm{7937}}^1$

素因数の和:7964

約数の個数: 32

約数和(自身を含む): 47628000

約数和(自身を除く): 25848872

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 343, 392, 686, 1372, 2744, 7937, 15874, 31748, 55559, 63496, 111118, 222236, 388913, 444472, 777826, 1555652, 2722391, 3111304, 5444782, 10889564, 21779128]

約数ペア:

[(1, 21779128), (2, 10889564), (4, 5444782), (7, 3111304), (8, 2722391), (14, 1555652), (28, 777826), (49, 444472), (56, 388913), (98, 222236), (196, 111118), (343, 63496), (392, 55559), (686, 31748), (1372, 15874), (2744, 7937)]