19647820

素因数分解:

$2^2\times 5^1\times {\mathrm{461}}^1\times {\mathrm{2131}}^1$

素因数の和:2601

約数の個数: 24

約数和(自身を含む): 41369328

約数和(自身を除く): 21721508

約数列:

[1, 2, 4, 5, 10, 20, 461, 922, 1844, 2131, 2305, 4262, 4610, 8524, 9220, 10655, 21310, 42620, 982391, 1964782, 3929564, 4911955, 9823910, 19647820]

約数ペア:

[(1, 19647820), (2, 9823910), (4, 4911955), (5, 3929564), (10, 1964782), (20, 982391), (461, 42620), (922, 21310), (1844, 10655), (2131, 9220), (2305, 8524), (4262, 4610)]