21702897

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{15761}}^1$

素因数の和:15790

約数の個数: 20

約数和(自身を含む): 34329636

約数和(自身を除く): 12626739

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 15761, 47283, 141849, 267937, 425547, 803811, 1276641, 2411433, 7234299, 21702897]

約数ペア:

[(1, 21702897), (3, 7234299), (9, 2411433), (17, 1276641), (27, 803811), (51, 425547), (81, 267937), (153, 141849), (459, 47283), (1377, 15761)]