20718908

素因数分解:

$2^2\times 7^1\times {\mathrm{677}}^1\times {\mathrm{1093}}^1$

素因数の和:1781

約数の個数: 24

約数和(自身を含む): 41536992

約数和(自身を除く): 20818084

約数列:

[1, 2, 4, 7, 14, 28, 677, 1093, 1354, 2186, 2708, 4372, 4739, 7651, 9478, 15302, 18956, 30604, 739961, 1479922, 2959844, 5179727, 10359454, 20718908]

約数ペア:

[(1, 20718908), (2, 10359454), (4, 5179727), (7, 2959844), (14, 1479922), (28, 739961), (677, 30604), (1093, 18956), (1354, 15302), (2186, 9478), (2708, 7651), (4372, 4739)]