19940656

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{20431}}^1$

素因数の和:20500

約数の個数: 20

約数和(自身を含む): 39270304

約数和(自身を除く): 19329648

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 20431, 40862, 81724, 163448, 326896, 1246291, 2492582, 4985164, 9970328, 19940656]

約数ペア:

[(1, 19940656), (2, 9970328), (4, 4985164), (8, 2492582), (16, 1246291), (61, 326896), (122, 163448), (244, 81724), (488, 40862), (976, 20431)]