27820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1$

素因数の和:129

約数の個数: 24

約数和(自身を含む): 63504

約数和(自身を除く): 35684

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 107, 130, 214, 260, 428, 535, 1070, 1391, 2140, 2782, 5564, 6955, 13910, 27820]

約数ペア:

[(1, 27820), (2, 13910), (4, 6955), (5, 5564), (10, 2782), (13, 2140), (20, 1391), (26, 1070), (52, 535), (65, 428), (107, 260), (130, 214)]