18947728

素因数分解:

$2^4\times {\mathrm{521}}^1\times {\mathrm{2273}}^1$

素因数の和:2802

約数の個数: 20

約数和(自身を含む): 36797868

約数和(自身を除く): 17850140

約数列:

[1, 2, 4, 8, 16, 521, 1042, 2084, 2273, 4168, 4546, 8336, 9092, 18184, 36368, 1184233, 2368466, 4736932, 9473864, 18947728]

約数ペア:

[(1, 18947728), (2, 9473864), (4, 4736932), (8, 2368466), (16, 1184233), (521, 36368), (1042, 18184), (2084, 9092), (2273, 8336), (4168, 4546)]