19985620

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^2\times {\mathrm{1889}}^1$

素因数の和:1944

約数の個数: 36

約数和(自身を含む): 43897140

約数和(自身を除く): 23911520

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 529, 1058, 1889, 2116, 2645, 3778, 5290, 7556, 9445, 10580, 18890, 37780, 43447, 86894, 173788, 217235, 434470, 868940, 999281, 1998562, 3997124, 4996405, 9992810, 19985620]

約数ペア:

[(1, 19985620), (2, 9992810), (4, 4996405), (5, 3997124), (10, 1998562), (20, 999281), (23, 868940), (46, 434470), (92, 217235), (115, 173788), (230, 86894), (460, 43447), (529, 37780), (1058, 18890), (1889, 10580), (2116, 9445), (2645, 7556), (3778, 5290)]