21218756

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{13163}}^1$

素因数の和:13211

約数の個数: 24

約数和(自身を含む): 41282304

約数和(自身を除く): 20063548

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 403, 806, 1612, 13163, 26326, 52652, 171119, 342238, 408053, 684476, 816106, 1632212, 5304689, 10609378, 21218756]

約数ペア:

[(1, 21218756), (2, 10609378), (4, 5304689), (13, 1632212), (26, 816106), (31, 684476), (52, 408053), (62, 342238), (124, 171119), (403, 52652), (806, 26326), (1612, 13163)]