20939444

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{853}}^1$

素因数の和:912

約数の個数: 36

約数和(自身を含む): 40997124

約数和(自身を除く): 20057680

約数列:

[1, 2, 4, 17, 19, 34, 38, 68, 76, 323, 361, 646, 722, 853, 1292, 1444, 1706, 3412, 6137, 12274, 14501, 16207, 24548, 29002, 32414, 58004, 64828, 275519, 307933, 551038, 615866, 1102076, 1231732, 5234861, 10469722, 20939444]

約数ペア:

[(1, 20939444), (2, 10469722), (4, 5234861), (17, 1231732), (19, 1102076), (34, 615866), (38, 551038), (68, 307933), (76, 275519), (323, 64828), (361, 58004), (646, 32414), (722, 29002), (853, 24548), (1292, 16207), (1444, 14501), (1706, 12274), (3412, 6137)]