21981392

素因数分解:

$2^4\times {\mathrm{577}}^1\times {\mathrm{2381}}^1$

素因数の和:2966

約数の個数: 20

約数和(自身を含む): 42680676

約数和(自身を除く): 20699284

約数列:

[1, 2, 4, 8, 16, 577, 1154, 2308, 2381, 4616, 4762, 9232, 9524, 19048, 38096, 1373837, 2747674, 5495348, 10990696, 21981392]

約数ペア:

[(1, 21981392), (2, 10990696), (4, 5495348), (8, 2747674), (16, 1373837), (577, 38096), (1154, 19048), (2308, 9524), (2381, 9232), (4616, 4762)]