66800720

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{17041}}^1$

素因数の和:17068

約数の個数: 60

約数和(自身を含む): 180679284

約数和(自身を除く): 113878564

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 17041, 34082, 68164, 85205, 119287, 136328, 170410, 238574, 272656, 340820, 477148, 596435, 681640, 835009, 954296, 1192870, 1363280, 1670018, 1908592, 2385740, 3340036, 4175045, 4771480, 6680072, 8350090, 9542960, 13360144, 16700180, 33400360, 66800720]

約数ペア:

[(1, 66800720), (2, 33400360), (4, 16700180), (5, 13360144), (7, 9542960), (8, 8350090), (10, 6680072), (14, 4771480), (16, 4175045), (20, 3340036), (28, 2385740), (35, 1908592), (40, 1670018), (49, 1363280), (56, 1192870), (70, 954296), (80, 835009), (98, 681640), (112, 596435), (140, 477148), (196, 340820), (245, 272656), (280, 238574), (392, 170410), (490, 136328), (560, 119287), (784, 85205), (980, 68164), (1960, 34082), (3920, 17041)]