18640856

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{7793}}^1$

素因数の和:7835

約数の個数: 32

約数和(自身を含む): 39281760

約数和(自身を除く): 20640904

約数列:

[1, 2, 4, 8, 13, 23, 26, 46, 52, 92, 104, 184, 299, 598, 1196, 2392, 7793, 15586, 31172, 62344, 101309, 179239, 202618, 358478, 405236, 716956, 810472, 1433912, 2330107, 4660214, 9320428, 18640856]

約数ペア:

[(1, 18640856), (2, 9320428), (4, 4660214), (8, 2330107), (13, 1433912), (23, 810472), (26, 716956), (46, 405236), (52, 358478), (92, 202618), (104, 179239), (184, 101309), (299, 62344), (598, 31172), (1196, 15586), (2392, 7793)]