1780821693

素因数分解:

$3^4\times 7^1\times {\mathrm{103}}^1\times {\mathrm{30493}}^1$

素因数の和:30615

約数の個数: 40

約数和(自身を含む): 3069891968

約数和(自身を除く): 1289070275

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 103, 189, 309, 567, 721, 927, 2163, 2781, 6489, 8343, 19467, 30493, 58401, 91479, 213451, 274437, 640353, 823311, 1921059, 2469933, 3140779, 5763177, 9422337, 17289531, 21985453, 28267011, 65956359, 84801033, 197869077, 254403099, 593607231, 1780821693]

約数ペア:

[(1, 1780821693), (3, 593607231), (7, 254403099), (9, 197869077), (21, 84801033), (27, 65956359), (63, 28267011), (81, 21985453), (103, 17289531), (189, 9422337), (309, 5763177), (567, 3140779), (721, 2469933), (927, 1921059), (2163, 823311), (2781, 640353), (6489, 274437), (8343, 213451), (19467, 91479), (30493, 58401)]