20970729

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{1187}}^1$

素因数の和:1357

約数の個数: 24

約数和(自身を含む): 32864832

約数和(自身を除く): 11894103

約数列:

[1, 3, 9, 13, 39, 117, 151, 453, 1187, 1359, 1963, 3561, 5889, 10683, 15431, 17667, 46293, 138879, 179237, 537711, 1613133, 2330081, 6990243, 20970729]

約数ペア:

[(1, 20970729), (3, 6990243), (9, 2330081), (13, 1613133), (39, 537711), (117, 179237), (151, 138879), (453, 46293), (1187, 17667), (1359, 15431), (1963, 10683), (3561, 5889)]