21686621

素因数分解:

${\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{113}}^1\times {\mathrm{239}}^1$

素因数の和:436

約数の個数: 16

約数和(自身を含む): 24295680

約数和(自身を除く): 2609059

約数列:

[1, 11, 73, 113, 239, 803, 1243, 2629, 8249, 17447, 27007, 90739, 191917, 297077, 1971511, 21686621]

約数ペア:

[(1, 21686621), (11, 1971511), (73, 297077), (113, 191917), (239, 90739), (803, 27007), (1243, 17447), (2629, 8249)]