21333565

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{2143}}^1$

素因数の和:2340

約数の個数: 16

約数和(自身を含む): 28094976

約数和(自身を除く): 6761411

約数列:

[1, 5, 11, 55, 181, 905, 1991, 2143, 9955, 10715, 23573, 117865, 387883, 1939415, 4266713, 21333565]

約数ペア:

[(1, 21333565), (5, 4266713), (11, 1939415), (55, 387883), (181, 117865), (905, 23573), (1991, 10715), (2143, 9955)]