28147840

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1$

素因数の和:190

約数の個数: 128

約数和(自身を含む): 78923520

約数和(自身を除く): 50775680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 61, 64, 70, 80, 103, 112, 122, 128, 140, 160, 206, 224, 244, 280, 305, 320, 412, 427, 448, 488, 515, 560, 610, 640, 721, 824, 854, 896, 976, 1030, 1120, 1220, 1442, 1648, 1708, 1952, 2060, 2135, 2240, 2440, 2884, 3296, 3416, 3605, 3904, 4120, 4270, 4480, 4880, 5768, 6283, 6592, 6832, 7210, 7808, 8240, 8540, 9760, 11536, 12566, 13184, 13664, 14420, 16480, 17080, 19520, 23072, 25132, 27328, 28840, 31415, 32960, 34160, 39040, 43981, 46144, 50264, 54656, 57680, 62830, 65920, 68320, 87962, 92288, 100528, 115360, 125660, 136640, 175924, 201056, 219905, 230720, 251320, 273280, 351848, 402112, 439810, 461440, 502640, 703696, 804224, 879620, 1005280, 1407392, 1759240, 2010560, 2814784, 3518480, 4021120, 5629568, 7036960, 14073920, 28147840]

約数ペア:

[(1, 28147840), (2, 14073920), (4, 7036960), (5, 5629568), (7, 4021120), (8, 3518480), (10, 2814784), (14, 2010560), (16, 1759240), (20, 1407392), (28, 1005280), (32, 879620), (35, 804224), (40, 703696), (56, 502640), (61, 461440), (64, 439810), (70, 402112), (80, 351848), (103, 273280), (112, 251320), (122, 230720), (128, 219905), (140, 201056), (160, 175924), (206, 136640), (224, 125660), (244, 115360), (280, 100528), (305, 92288), (320, 87962), (412, 68320), (427, 65920), (448, 62830), (488, 57680), (515, 54656), (560, 50264), (610, 46144), (640, 43981), (721, 39040), (824, 34160), (854, 32960), (896, 31415), (976, 28840), (1030, 27328), (1120, 25132), (1220, 23072), (1442, 19520), (1648, 17080), (1708, 16480), (1952, 14420), (2060, 13664), (2135, 13184), (2240, 12566), (2440, 11536), (2884, 9760), (3296, 8540), (3416, 8240), (3605, 7808), (3904, 7210), (4120, 6832), (4270, 6592), (4480, 6283), (4880, 5768)]