21147944

素因数分解:

$2^3\times {\mathrm{1091}}^1\times {\mathrm{2423}}^1$

素因数の和:3520

約数の個数: 16

約数和(自身を含む): 39705120

約数和(自身を除く): 18557176

約数列:

[1, 2, 4, 8, 1091, 2182, 2423, 4364, 4846, 8728, 9692, 19384, 2643493, 5286986, 10573972, 21147944]

約数ペア:

[(1, 21147944), (2, 10573972), (4, 5286986), (8, 2643493), (1091, 19384), (2182, 9692), (2423, 8728), (4364, 4846)]