20943738

素因数分解:

$2^1\times 3^3\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{149}}^1$

素因数の和:316

約数の個数: 64

約数和(自身を含む): 49680000

約数和(自身を除く): 28736262

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 54, 57, 114, 137, 149, 171, 274, 298, 342, 411, 447, 513, 822, 894, 1026, 1233, 1341, 2466, 2603, 2682, 2831, 3699, 4023, 5206, 5662, 7398, 7809, 8046, 8493, 15618, 16986, 20413, 23427, 25479, 40826, 46854, 50958, 61239, 70281, 76437, 122478, 140562, 152874, 183717, 367434, 387847, 551151, 775694, 1102302, 1163541, 2327082, 3490623, 6981246, 10471869, 20943738]

約数ペア:

[(1, 20943738), (2, 10471869), (3, 6981246), (6, 3490623), (9, 2327082), (18, 1163541), (19, 1102302), (27, 775694), (38, 551151), (54, 387847), (57, 367434), (114, 183717), (137, 152874), (149, 140562), (171, 122478), (274, 76437), (298, 70281), (342, 61239), (411, 50958), (447, 46854), (513, 40826), (822, 25479), (894, 23427), (1026, 20413), (1233, 16986), (1341, 15618), (2466, 8493), (2603, 8046), (2682, 7809), (2831, 7398), (3699, 5662), (4023, 5206)]