66565520

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{16981}}^1$

素因数の和:17008

約数の個数: 60

約数和(自身を含む): 180043164

約数和(自身を除く): 113477644

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, 16981, 33962, 67924, 84905, 118867, 135848, 169810, 237734, 271696, 339620, 475468, 594335, 679240, 832069, 950936, 1188670, 1358480, 1664138, 1901872, 2377340, 3328276, 4160345, 4754680, 6656552, 8320690, 9509360, 13313104, 16641380, 33282760, 66565520]

約数ペア:

[(1, 66565520), (2, 33282760), (4, 16641380), (5, 13313104), (7, 9509360), (8, 8320690), (10, 6656552), (14, 4754680), (16, 4160345), (20, 3328276), (28, 2377340), (35, 1901872), (40, 1664138), (49, 1358480), (56, 1188670), (70, 950936), (80, 832069), (98, 679240), (112, 594335), (140, 475468), (196, 339620), (245, 271696), (280, 237734), (392, 169810), (490, 135848), (560, 118867), (784, 84905), (980, 67924), (1960, 33962), (3920, 16981)]