19402880

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:158

約数の個数: 128

約数和(自身を含む): 54639360

約数和(自身を除く): 35236480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 61, 64, 70, 71, 80, 112, 122, 128, 140, 142, 160, 224, 244, 280, 284, 305, 320, 355, 427, 448, 488, 497, 560, 568, 610, 640, 710, 854, 896, 976, 994, 1120, 1136, 1220, 1420, 1708, 1952, 1988, 2135, 2240, 2272, 2440, 2485, 2840, 3416, 3904, 3976, 4270, 4331, 4480, 4544, 4880, 4970, 5680, 6832, 7808, 7952, 8540, 8662, 9088, 9760, 9940, 11360, 13664, 15904, 17080, 17324, 19520, 19880, 21655, 22720, 27328, 30317, 31808, 34160, 34648, 39040, 39760, 43310, 45440, 54656, 60634, 63616, 68320, 69296, 79520, 86620, 121268, 136640, 138592, 151585, 159040, 173240, 242536, 273280, 277184, 303170, 318080, 346480, 485072, 554368, 606340, 692960, 970144, 1212680, 1385920, 1940288, 2425360, 2771840, 3880576, 4850720, 9701440, 19402880]

約数ペア:

[(1, 19402880), (2, 9701440), (4, 4850720), (5, 3880576), (7, 2771840), (8, 2425360), (10, 1940288), (14, 1385920), (16, 1212680), (20, 970144), (28, 692960), (32, 606340), (35, 554368), (40, 485072), (56, 346480), (61, 318080), (64, 303170), (70, 277184), (71, 273280), (80, 242536), (112, 173240), (122, 159040), (128, 151585), (140, 138592), (142, 136640), (160, 121268), (224, 86620), (244, 79520), (280, 69296), (284, 68320), (305, 63616), (320, 60634), (355, 54656), (427, 45440), (448, 43310), (488, 39760), (497, 39040), (560, 34648), (568, 34160), (610, 31808), (640, 30317), (710, 27328), (854, 22720), (896, 21655), (976, 19880), (994, 19520), (1120, 17324), (1136, 17080), (1220, 15904), (1420, 13664), (1708, 11360), (1952, 9940), (1988, 9760), (2135, 9088), (2240, 8662), (2272, 8540), (2440, 7952), (2485, 7808), (2840, 6832), (3416, 5680), (3904, 4970), (3976, 4880), (4270, 4544), (4331, 4480)]