21387274

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{6781}}^1$

素因数の和:6885

約数の個数: 16

約数和(自身を含む): 34181280

約数和(自身を除く): 12794006

約数列:

[1, 2, 19, 38, 83, 166, 1577, 3154, 6781, 13562, 128839, 257678, 562823, 1125646, 10693637, 21387274]

約数ペア:

[(1, 21387274), (2, 10693637), (19, 1125646), (38, 562823), (83, 257678), (166, 128839), (1577, 13562), (3154, 6781)]