19992280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6491}}^1$

素因数の和:6520

約数の個数: 64

約数和(自身を含む): 56090880

約数和(自身を除く): 36098600

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 6491, 12982, 25964, 32455, 45437, 51928, 64910, 71401, 90874, 129820, 142802, 181748, 227185, 259640, 285604, 357005, 363496, 454370, 499807, 571208, 714010, 908740, 999614, 1428020, 1817480, 1999228, 2499035, 2856040, 3998456, 4998070, 9996140, 19992280]

約数ペア:

[(1, 19992280), (2, 9996140), (4, 4998070), (5, 3998456), (7, 2856040), (8, 2499035), (10, 1999228), (11, 1817480), (14, 1428020), (20, 999614), (22, 908740), (28, 714010), (35, 571208), (40, 499807), (44, 454370), (55, 363496), (56, 357005), (70, 285604), (77, 259640), (88, 227185), (110, 181748), (140, 142802), (154, 129820), (220, 90874), (280, 71401), (308, 64910), (385, 51928), (440, 45437), (616, 32455), (770, 25964), (1540, 12982), (3080, 6491)]