21978418

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{3319}}^1$

素因数の和:3382

約数の個数: 32

約数和(自身を含む): 42071040

約数和(自身を除く): 20092622

約数列:

[1, 2, 7, 11, 14, 22, 43, 77, 86, 154, 301, 473, 602, 946, 3311, 3319, 6622, 6638, 23233, 36509, 46466, 73018, 142717, 255563, 285434, 511126, 999019, 1569887, 1998038, 3139774, 10989209, 21978418]

約数ペア:

[(1, 21978418), (2, 10989209), (7, 3139774), (11, 1998038), (14, 1569887), (22, 999019), (43, 511126), (77, 285434), (86, 255563), (154, 142717), (301, 73018), (473, 46466), (602, 36509), (946, 23233), (3311, 6638), (3319, 6622)]