20940003

素因数分解:

$3^2\times 7^2\times {\mathrm{103}}^1\times {\mathrm{461}}^1$

素因数の和:584

約数の個数: 36

約数和(自身を含む): 35603568

約数和(自身を除く): 14663565

約数列:

[1, 3, 7, 9, 21, 49, 63, 103, 147, 309, 441, 461, 721, 927, 1383, 2163, 3227, 4149, 5047, 6489, 9681, 15141, 22589, 29043, 45423, 47483, 67767, 142449, 203301, 332381, 427347, 997143, 2326667, 2991429, 6980001, 20940003]

約数ペア:

[(1, 20940003), (3, 6980001), (7, 2991429), (9, 2326667), (21, 997143), (49, 427347), (63, 332381), (103, 203301), (147, 142449), (309, 67767), (441, 47483), (461, 45423), (721, 29043), (927, 22589), (1383, 15141), (2163, 9681), (3227, 6489), (4149, 5047)]