21042889

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{1823}}^1$

素因数の和:1944

約数の個数: 16

約数和(自身を含む): 25740288

約数和(自身を除く): 4697399

約数列:

[1, 7, 17, 97, 119, 679, 1649, 1823, 11543, 12761, 30991, 176831, 216937, 1237817, 3006127, 21042889]

約数ペア:

[(1, 21042889), (7, 3006127), (17, 1237817), (97, 216937), (119, 176831), (679, 30991), (1649, 12761), (1823, 11543)]