21086468785

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{919}}^1\times {\mathrm{106721}}^1$

素因数の和:107688

約数の個数: 16

約数和(自身を含む): 25920639360

約数和(自身を除く): 4834170575

約数列:

[1, 5, 43, 215, 919, 4595, 39517, 106721, 197585, 533605, 4589003, 22945015, 98076599, 490382995, 4217293757, 21086468785]

約数ペア:

[(1, 21086468785), (5, 4217293757), (43, 490382995), (215, 98076599), (919, 22945015), (4595, 4589003), (39517, 533605), (106721, 197585)]