19841920

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1$

素因数の和:172

約数の個数: 128

約数和(自身を含む): 56010240

約数和(自身を除く): 36168320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 43, 56, 64, 70, 80, 86, 103, 112, 128, 140, 160, 172, 206, 215, 224, 280, 301, 320, 344, 412, 430, 448, 515, 560, 602, 640, 688, 721, 824, 860, 896, 1030, 1120, 1204, 1376, 1442, 1505, 1648, 1720, 2060, 2240, 2408, 2752, 2884, 3010, 3296, 3440, 3605, 4120, 4429, 4480, 4816, 5504, 5768, 6020, 6592, 6880, 7210, 8240, 8858, 9632, 11536, 12040, 13184, 13760, 14420, 16480, 17716, 19264, 22145, 23072, 24080, 27520, 28840, 31003, 32960, 35432, 38528, 44290, 46144, 48160, 57680, 62006, 65920, 70864, 88580, 92288, 96320, 115360, 124012, 141728, 155015, 177160, 192640, 230720, 248024, 283456, 310030, 354320, 461440, 496048, 566912, 620060, 708640, 992096, 1240120, 1417280, 1984192, 2480240, 2834560, 3968384, 4960480, 9920960, 19841920]

約数ペア:

[(1, 19841920), (2, 9920960), (4, 4960480), (5, 3968384), (7, 2834560), (8, 2480240), (10, 1984192), (14, 1417280), (16, 1240120), (20, 992096), (28, 708640), (32, 620060), (35, 566912), (40, 496048), (43, 461440), (56, 354320), (64, 310030), (70, 283456), (80, 248024), (86, 230720), (103, 192640), (112, 177160), (128, 155015), (140, 141728), (160, 124012), (172, 115360), (206, 96320), (215, 92288), (224, 88580), (280, 70864), (301, 65920), (320, 62006), (344, 57680), (412, 48160), (430, 46144), (448, 44290), (515, 38528), (560, 35432), (602, 32960), (640, 31003), (688, 28840), (721, 27520), (824, 24080), (860, 23072), (896, 22145), (1030, 19264), (1120, 17716), (1204, 16480), (1376, 14420), (1442, 13760), (1505, 13184), (1648, 12040), (1720, 11536), (2060, 9632), (2240, 8858), (2408, 8240), (2752, 7210), (2884, 6880), (3010, 6592), (3296, 6020), (3440, 5768), (3605, 5504), (4120, 4816), (4429, 4480)]