21206691

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{23801}}^1$

素因数の和:23824

約数の個数: 20

約数和(自身を含む): 34560504

約数和(自身を除く): 13353813

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 297, 891, 23801, 71403, 214209, 261811, 642627, 785433, 1927881, 2356299, 7068897, 21206691]

約数ペア:

[(1, 21206691), (3, 7068897), (9, 2356299), (11, 1927881), (27, 785433), (33, 642627), (81, 261811), (99, 214209), (297, 71403), (891, 23801)]