20413120

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{701}}^1$

素因数の和:738

約数の個数: 112

約数和(自身を含む): 59911488

約数和(自身を除く): 39498368

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 64, 65, 70, 80, 91, 104, 112, 130, 140, 160, 182, 208, 224, 260, 280, 320, 364, 416, 448, 455, 520, 560, 701, 728, 832, 910, 1040, 1120, 1402, 1456, 1820, 2080, 2240, 2804, 2912, 3505, 3640, 4160, 4907, 5608, 5824, 7010, 7280, 9113, 9814, 11216, 14020, 14560, 18226, 19628, 22432, 24535, 28040, 29120, 36452, 39256, 44864, 45565, 49070, 56080, 63791, 72904, 78512, 91130, 98140, 112160, 127582, 145808, 157024, 182260, 196280, 224320, 255164, 291616, 314048, 318955, 364520, 392560, 510328, 583232, 637910, 729040, 785120, 1020656, 1275820, 1458080, 1570240, 2041312, 2551640, 2916160, 4082624, 5103280, 10206560, 20413120]

約数ペア:

[(1, 20413120), (2, 10206560), (4, 5103280), (5, 4082624), (7, 2916160), (8, 2551640), (10, 2041312), (13, 1570240), (14, 1458080), (16, 1275820), (20, 1020656), (26, 785120), (28, 729040), (32, 637910), (35, 583232), (40, 510328), (52, 392560), (56, 364520), (64, 318955), (65, 314048), (70, 291616), (80, 255164), (91, 224320), (104, 196280), (112, 182260), (130, 157024), (140, 145808), (160, 127582), (182, 112160), (208, 98140), (224, 91130), (260, 78512), (280, 72904), (320, 63791), (364, 56080), (416, 49070), (448, 45565), (455, 44864), (520, 39256), (560, 36452), (701, 29120), (728, 28040), (832, 24535), (910, 22432), (1040, 19628), (1120, 18226), (1402, 14560), (1456, 14020), (1820, 11216), (2080, 9814), (2240, 9113), (2804, 7280), (2912, 7010), (3505, 5824), (3640, 5608), (4160, 4907)]