21286992

素因数分解:

$2^4\times 3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1373}}^1$

素因数の和:1420

約数の個数: 80

約数和(自身を含む): 61335360

約数和(自身を除く): 40048368

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 17, 19, 24, 34, 38, 48, 51, 57, 68, 76, 102, 114, 136, 152, 204, 228, 272, 304, 323, 408, 456, 646, 816, 912, 969, 1292, 1373, 1938, 2584, 2746, 3876, 4119, 5168, 5492, 7752, 8238, 10984, 15504, 16476, 21968, 23341, 26087, 32952, 46682, 52174, 65904, 70023, 78261, 93364, 104348, 140046, 156522, 186728, 208696, 280092, 313044, 373456, 417392, 443479, 560184, 626088, 886958, 1120368, 1252176, 1330437, 1773916, 2660874, 3547832, 5321748, 7095664, 10643496, 21286992]

約数ペア:

[(1, 21286992), (2, 10643496), (3, 7095664), (4, 5321748), (6, 3547832), (8, 2660874), (12, 1773916), (16, 1330437), (17, 1252176), (19, 1120368), (24, 886958), (34, 626088), (38, 560184), (48, 443479), (51, 417392), (57, 373456), (68, 313044), (76, 280092), (102, 208696), (114, 186728), (136, 156522), (152, 140046), (204, 104348), (228, 93364), (272, 78261), (304, 70023), (323, 65904), (408, 52174), (456, 46682), (646, 32952), (816, 26087), (912, 23341), (969, 21968), (1292, 16476), (1373, 15504), (1938, 10984), (2584, 8238), (2746, 7752), (3876, 5492), (4119, 5168)]