20415416

素因数分解:

$2^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{167}}^1$

素因数の和:276

約数の個数: 64

約数和(自身を含む): 45964800

約数和(自身を除く): 25549384

約数列:

[1, 2, 4, 7, 8, 14, 28, 37, 56, 59, 74, 118, 148, 167, 236, 259, 296, 334, 413, 472, 518, 668, 826, 1036, 1169, 1336, 1652, 2072, 2183, 2338, 3304, 4366, 4676, 6179, 8732, 9352, 9853, 12358, 15281, 17464, 19706, 24716, 30562, 39412, 43253, 49432, 61124, 68971, 78824, 86506, 122248, 137942, 173012, 275884, 346024, 364561, 551768, 729122, 1458244, 2551927, 2916488, 5103854, 10207708, 20415416]

約数ペア:

[(1, 20415416), (2, 10207708), (4, 5103854), (7, 2916488), (8, 2551927), (14, 1458244), (28, 729122), (37, 551768), (56, 364561), (59, 346024), (74, 275884), (118, 173012), (148, 137942), (167, 122248), (236, 86506), (259, 78824), (296, 68971), (334, 61124), (413, 49432), (472, 43253), (518, 39412), (668, 30562), (826, 24716), (1036, 19706), (1169, 17464), (1336, 15281), (1652, 12358), (2072, 9853), (2183, 9352), (2338, 8732), (3304, 6179), (4366, 4676)]