21878864

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{11491}}^1$

素因数の和:11523

約数の個数: 40

約数和(自身を含む): 51300288

約数和(自身を除く): 29421424

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 56, 68, 112, 119, 136, 238, 272, 476, 952, 1904, 11491, 22982, 45964, 80437, 91928, 160874, 183856, 195347, 321748, 390694, 643496, 781388, 1286992, 1367429, 1562776, 2734858, 3125552, 5469716, 10939432, 21878864]

約数ペア:

[(1, 21878864), (2, 10939432), (4, 5469716), (7, 3125552), (8, 2734858), (14, 1562776), (16, 1367429), (17, 1286992), (28, 781388), (34, 643496), (56, 390694), (68, 321748), (112, 195347), (119, 183856), (136, 160874), (238, 91928), (272, 80437), (476, 45964), (952, 22982), (1904, 11491)]