21031945

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{8893}}^1$

素因数の和:8952

約数の個数: 16

約数和(自身を含む): 28176192

約数和(自身を除く): 7144247

約数列:

[1, 5, 11, 43, 55, 215, 473, 2365, 8893, 44465, 97823, 382399, 489115, 1911995, 4206389, 21031945]

約数ペア:

[(1, 21031945), (5, 4206389), (11, 1911995), (43, 489115), (55, 382399), (215, 97823), (473, 44465), (2365, 8893)]