21207609

素因数分解:

$3^3\times {\mathrm{59}}^1\times {\mathrm{13313}}^1$

素因数の和:13381

約数の個数: 16

約数和(自身を含む): 31953600

約数和(自身を除く): 10745991

約数列:

[1, 3, 9, 27, 59, 177, 531, 1593, 13313, 39939, 119817, 359451, 785467, 2356401, 7069203, 21207609]

約数ペア:

[(1, 21207609), (3, 7069203), (9, 2356401), (27, 785467), (59, 359451), (177, 119817), (531, 39939), (1593, 13313)]