21491961

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{617}}^1\times {\mathrm{683}}^1$

素因数の和:1320

約数の個数: 16

約数和(自身を含む): 30435264

約数和(自身を除く): 8943303

約数列:

[1, 3, 17, 51, 617, 683, 1851, 2049, 10489, 11611, 31467, 34833, 421411, 1264233, 7163987, 21491961]

約数ペア:

[(1, 21491961), (3, 7163987), (17, 1264233), (51, 421411), (617, 34833), (683, 31467), (1851, 11611), (2049, 10489)]