20981754

素因数分解:

$2^1\times 3^4\times {\mathrm{129517}}^1$

素因数の和:129531

約数の個数: 20

約数和(自身を含む): 47015034

約数和(自身を除く): 26033280

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 129517, 259034, 388551, 777102, 1165653, 2331306, 3496959, 6993918, 10490877, 20981754]

約数ペア:

[(1, 20981754), (2, 10490877), (3, 6993918), (6, 3496959), (9, 2331306), (18, 1165653), (27, 777102), (54, 388551), (81, 259034), (162, 129517)]