20972619

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{1427}}^1$

素因数の和:1527

約数の個数: 24

約数和(自身を含む): 32078592

約数和(自身を除く): 11105973

約数列:

[1, 3, 9, 23, 69, 71, 207, 213, 639, 1427, 1633, 4281, 4899, 12843, 14697, 32821, 98463, 101317, 295389, 303951, 911853, 2330291, 6990873, 20972619]

約数ペア:

[(1, 20972619), (3, 6990873), (9, 2330291), (23, 911853), (69, 303951), (71, 295389), (207, 101317), (213, 98463), (639, 32821), (1427, 14697), (1633, 12843), (4281, 4899)]