21088040981

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{2786843}}^1$

素因数の和:2786920

約数の個数: 16

約数和(自身を含む): 25683554304

約数和(自身を除く): 4595513323

約数列:

[1, 7, 23, 47, 161, 329, 1081, 7567, 2786843, 19507901, 64097389, 130981621, 448681723, 916871347, 3012577283, 21088040981]

約数ペア:

[(1, 21088040981), (7, 3012577283), (23, 916871347), (47, 448681723), (161, 130981621), (329, 64097389), (1081, 19507901), (7567, 2786843)]