19807680

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{439}}^1$

素因数の和:506

約数の個数: 112

約数和(自身を含む): 64373760

約数和(自身を除く): 44566080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 47, 48, 60, 64, 80, 94, 96, 120, 141, 160, 188, 192, 235, 240, 282, 320, 376, 439, 470, 480, 564, 705, 752, 878, 940, 960, 1128, 1317, 1410, 1504, 1756, 1880, 2195, 2256, 2634, 2820, 3008, 3512, 3760, 4390, 4512, 5268, 5640, 6585, 7024, 7520, 8780, 9024, 10536, 11280, 13170, 14048, 15040, 17560, 20633, 21072, 22560, 26340, 28096, 35120, 41266, 42144, 45120, 52680, 61899, 70240, 82532, 84288, 103165, 105360, 123798, 140480, 165064, 206330, 210720, 247596, 309495, 330128, 412660, 421440, 495192, 618990, 660256, 825320, 990384, 1237980, 1320512, 1650640, 1980768, 2475960, 3301280, 3961536, 4951920, 6602560, 9903840, 19807680]

約数ペア:

[(1, 19807680), (2, 9903840), (3, 6602560), (4, 4951920), (5, 3961536), (6, 3301280), (8, 2475960), (10, 1980768), (12, 1650640), (15, 1320512), (16, 1237980), (20, 990384), (24, 825320), (30, 660256), (32, 618990), (40, 495192), (47, 421440), (48, 412660), (60, 330128), (64, 309495), (80, 247596), (94, 210720), (96, 206330), (120, 165064), (141, 140480), (160, 123798), (188, 105360), (192, 103165), (235, 84288), (240, 82532), (282, 70240), (320, 61899), (376, 52680), (439, 45120), (470, 42144), (480, 41266), (564, 35120), (705, 28096), (752, 26340), (878, 22560), (940, 21072), (960, 20633), (1128, 17560), (1317, 15040), (1410, 14048), (1504, 13170), (1756, 11280), (1880, 10536), (2195, 9024), (2256, 8780), (2634, 7520), (2820, 7024), (3008, 6585), (3512, 5640), (3760, 5268), (4390, 4512)]