20178424

素因数分解:

$2^3\times 7^1\times {\mathrm{409}}^1\times {\mathrm{881}}^1$

素因数の和:1303

約数の個数: 32

約数和(自身を含む): 43394400

約数和(自身を除く): 23215976

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 409, 818, 881, 1636, 1762, 2863, 3272, 3524, 5726, 6167, 7048, 11452, 12334, 22904, 24668, 49336, 360329, 720658, 1441316, 2522303, 2882632, 5044606, 10089212, 20178424]

約数ペア:

[(1, 20178424), (2, 10089212), (4, 5044606), (7, 2882632), (8, 2522303), (14, 1441316), (28, 720658), (56, 360329), (409, 49336), (818, 24668), (881, 22904), (1636, 12334), (1762, 11452), (2863, 7048), (3272, 6167), (3524, 5726)]