21360778821

素因数分解:

$3^2\times {\mathrm{821}}^1\times {\mathrm{2890889}}^1$

素因数の和:2891716

約数の個数: 12

約数和(自身を含む): 30892050540

約数和(自身を除く): 9531271719

約数列:

[1, 3, 9, 821, 2463, 7389, 2890889, 8672667, 26018001, 2373419869, 7120259607, 21360778821]

約数ペア:

[(1, 21360778821), (3, 7120259607), (9, 2373419869), (821, 26018001), (2463, 8672667), (7389, 2890889)]