21906978

素因数分解:

$2^1\times 3^1\times {\mathrm{439}}^1\times {\mathrm{8317}}^1$

素因数の和:8761

約数の個数: 16

約数和(自身を含む): 43919040

約数和(自身を除く): 22012062

約数列:

[1, 2, 3, 6, 439, 878, 1317, 2634, 8317, 16634, 24951, 49902, 3651163, 7302326, 10953489, 21906978]

約数ペア:

[(1, 21906978), (2, 10953489), (3, 7302326), (6, 3651163), (439, 49902), (878, 24951), (1317, 16634), (2634, 8317)]