18860402

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{19937}}^1$

素因数の和:19993

約数の個数: 16

約数和(自身を含む): 31581792

約数和(自身を除く): 12721390

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 19937, 39874, 219307, 438614, 857291, 1714582, 9430201, 18860402]

約数ペア:

[(1, 18860402), (2, 9430201), (11, 1714582), (22, 857291), (43, 438614), (86, 219307), (473, 39874), (946, 19937)]