19868956

素因数分解:

$2^2\times {\mathrm{109}}^1\times {\mathrm{199}}^1\times {\mathrm{229}}^1$

素因数の和:541

約数の個数: 24

約数和(自身を含む): 35420000

約数和(自身を除く): 15551044

約数列:

[1, 2, 4, 109, 199, 218, 229, 398, 436, 458, 796, 916, 21691, 24961, 43382, 45571, 49922, 86764, 91142, 99844, 182284, 4967239, 9934478, 19868956]

約数ペア:

[(1, 19868956), (2, 9934478), (4, 4967239), (109, 182284), (199, 99844), (218, 91142), (229, 86764), (398, 49922), (436, 45571), (458, 43382), (796, 24961), (916, 21691)]