12988660

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{7297}}^1$

素因数の和:7395

約数の個数: 24

約数和(自身を含む): 27586440

約数和(自身を除く): 14597780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 7297, 14594, 29188, 36485, 72970, 145940, 649433, 1298866, 2597732, 3247165, 6494330, 12988660]

約数ペア:

[(1, 12988660), (2, 6494330), (4, 3247165), (5, 2597732), (10, 1298866), (20, 649433), (89, 145940), (178, 72970), (356, 36485), (445, 29188), (890, 14594), (1780, 7297)]