21017748

素因数分解:

$2^2\times 3^1\times {\mathrm{41}}^1\times {\mathrm{42719}}^1$

素因数の和:42767

約数の個数: 24

約数和(自身を含む): 50238720

約数和(自身を除く): 29220972

約数列:

[1, 2, 3, 4, 6, 12, 41, 82, 123, 164, 246, 492, 42719, 85438, 128157, 170876, 256314, 512628, 1751479, 3502958, 5254437, 7005916, 10508874, 21017748]

約数ペア:

[(1, 21017748), (2, 10508874), (3, 7005916), (4, 5254437), (6, 3502958), (12, 1751479), (41, 512628), (82, 256314), (123, 170876), (164, 128157), (246, 85438), (492, 42719)]