21520368

素因数分解:

$2^4\times 3^2\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{149}}^1$

素因数の和:239

約数の個数: 120

約数和(自身を含む): 65286000

約数和(自身を除く): 43765632

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 17, 18, 24, 34, 36, 48, 51, 59, 68, 72, 102, 118, 136, 144, 149, 153, 177, 204, 236, 272, 298, 306, 354, 408, 447, 472, 531, 596, 612, 708, 816, 894, 944, 1003, 1062, 1192, 1224, 1341, 1416, 1788, 2006, 2124, 2384, 2448, 2533, 2682, 2832, 3009, 3576, 4012, 4248, 5066, 5364, 6018, 7152, 7599, 8024, 8496, 8791, 9027, 10132, 10728, 12036, 15198, 16048, 17582, 18054, 20264, 21456, 22797, 24072, 26373, 30396, 35164, 36108, 40528, 45594, 48144, 52746, 60792, 70328, 72216, 79119, 91188, 105492, 121584, 140656, 144432, 149447, 158238, 182376, 210984, 298894, 316476, 364752, 421968, 448341, 597788, 632952, 896682, 1195576, 1265904, 1345023, 1793364, 2391152, 2690046, 3586728, 5380092, 7173456, 10760184, 21520368]

約数ペア:

[(1, 21520368), (2, 10760184), (3, 7173456), (4, 5380092), (6, 3586728), (8, 2690046), (9, 2391152), (12, 1793364), (16, 1345023), (17, 1265904), (18, 1195576), (24, 896682), (34, 632952), (36, 597788), (48, 448341), (51, 421968), (59, 364752), (68, 316476), (72, 298894), (102, 210984), (118, 182376), (136, 158238), (144, 149447), (149, 144432), (153, 140656), (177, 121584), (204, 105492), (236, 91188), (272, 79119), (298, 72216), (306, 70328), (354, 60792), (408, 52746), (447, 48144), (472, 45594), (531, 40528), (596, 36108), (612, 35164), (708, 30396), (816, 26373), (894, 24072), (944, 22797), (1003, 21456), (1062, 20264), (1192, 18054), (1224, 17582), (1341, 16048), (1416, 15198), (1788, 12036), (2006, 10728), (2124, 10132), (2384, 9027), (2448, 8791), (2533, 8496), (2682, 8024), (2832, 7599), (3009, 7152), (3576, 6018), (4012, 5364), (4248, 5066)]