19680480

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{173}}^1$

素因数の和:273

約数の個数: 144

約数和(自身を含む): 68402880

約数和(自身を除く): 48722400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 79, 80, 90, 96, 120, 144, 158, 160, 173, 180, 237, 240, 288, 316, 346, 360, 395, 474, 480, 519, 632, 692, 711, 720, 790, 865, 948, 1038, 1185, 1264, 1384, 1422, 1440, 1557, 1580, 1730, 1896, 2076, 2370, 2528, 2595, 2768, 2844, 3114, 3160, 3460, 3555, 3792, 4152, 4740, 5190, 5536, 5688, 6228, 6320, 6920, 7110, 7584, 7785, 8304, 9480, 10380, 11376, 12456, 12640, 13667, 13840, 14220, 15570, 16608, 18960, 20760, 22752, 24912, 27334, 27680, 28440, 31140, 37920, 41001, 41520, 49824, 54668, 56880, 62280, 68335, 82002, 83040, 109336, 113760, 123003, 124560, 136670, 164004, 205005, 218672, 246006, 249120, 273340, 328008, 410010, 437344, 492012, 546680, 615015, 656016, 820020, 984024, 1093360, 1230030, 1312032, 1640040, 1968048, 2186720, 2460060, 3280080, 3936096, 4920120, 6560160, 9840240, 19680480]

約数ペア:

[(1, 19680480), (2, 9840240), (3, 6560160), (4, 4920120), (5, 3936096), (6, 3280080), (8, 2460060), (9, 2186720), (10, 1968048), (12, 1640040), (15, 1312032), (16, 1230030), (18, 1093360), (20, 984024), (24, 820020), (30, 656016), (32, 615015), (36, 546680), (40, 492012), (45, 437344), (48, 410010), (60, 328008), (72, 273340), (79, 249120), (80, 246006), (90, 218672), (96, 205005), (120, 164004), (144, 136670), (158, 124560), (160, 123003), (173, 113760), (180, 109336), (237, 83040), (240, 82002), (288, 68335), (316, 62280), (346, 56880), (360, 54668), (395, 49824), (474, 41520), (480, 41001), (519, 37920), (632, 31140), (692, 28440), (711, 27680), (720, 27334), (790, 24912), (865, 22752), (948, 20760), (1038, 18960), (1185, 16608), (1264, 15570), (1384, 14220), (1422, 13840), (1440, 13667), (1557, 12640), (1580, 12456), (1730, 11376), (1896, 10380), (2076, 9480), (2370, 8304), (2528, 7785), (2595, 7584), (2768, 7110), (2844, 6920), (3114, 6320), (3160, 6228), (3460, 5688), (3555, 5536), (3792, 5190), (4152, 4740)]