21407947

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{479}}^1$

素因数の和:746

約数の個数: 16

約数和(自身を含む): 24883200

約数和(自身を除く): 3475253

約数列:

[1, 11, 17, 187, 239, 479, 2629, 4063, 5269, 8143, 44693, 89573, 114481, 1259291, 1946177, 21407947]

約数ペア:

[(1, 21407947), (11, 1946177), (17, 1259291), (187, 114481), (239, 89573), (479, 44693), (2629, 8143), (4063, 5269)]