21136336

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{331}}^1$

素因数の和:659

約数の個数: 40

約数和(自身を含む): 44379104

約数和(自身を除く): 23242768

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 307, 331, 614, 662, 1228, 1324, 2456, 2648, 3991, 4303, 4912, 5296, 7982, 8606, 15964, 17212, 31928, 34424, 63856, 68848, 101617, 203234, 406468, 812936, 1321021, 1625872, 2642042, 5284084, 10568168, 21136336]

約数ペア:

[(1, 21136336), (2, 10568168), (4, 5284084), (8, 2642042), (13, 1625872), (16, 1321021), (26, 812936), (52, 406468), (104, 203234), (208, 101617), (307, 68848), (331, 63856), (614, 34424), (662, 31928), (1228, 17212), (1324, 15964), (2456, 8606), (2648, 7982), (3991, 5296), (4303, 4912)]