19968688

素因数分解:

$2^4\times {\mathrm{311}}^1\times {\mathrm{4013}}^1$

素因数の和:4332

約数の個数: 20

約数和(自身を含む): 38823408

約数和(自身を除く): 18854720

約数列:

[1, 2, 4, 8, 16, 311, 622, 1244, 2488, 4013, 4976, 8026, 16052, 32104, 64208, 1248043, 2496086, 4992172, 9984344, 19968688]

約数ペア:

[(1, 19968688), (2, 9984344), (4, 4992172), (8, 2496086), (16, 1248043), (311, 64208), (622, 32104), (1244, 16052), (2488, 8026), (4013, 4976)]