216857007

素因数分解:

$3^4\times {\mathrm{107}}^1\times {\mathrm{131}}^1\times {\mathrm{191}}^1$

素因数の和:441

約数の個数: 40

約数和(自身を含む): 331195392

約数和(自身を除く): 114338385

約数列:

[1, 3, 9, 27, 81, 107, 131, 191, 321, 393, 573, 963, 1179, 1719, 2889, 3537, 5157, 8667, 10611, 14017, 15471, 20437, 25021, 42051, 61311, 75063, 126153, 183933, 225189, 378459, 551799, 675567, 1135377, 1655397, 2026701, 2677247, 8031741, 24095223, 72285669, 216857007]

約数ペア:

[(1, 216857007), (3, 72285669), (9, 24095223), (27, 8031741), (81, 2677247), (107, 2026701), (131, 1655397), (191, 1135377), (321, 675567), (393, 551799), (573, 378459), (963, 225189), (1179, 183933), (1719, 126153), (2889, 75063), (3537, 61311), (5157, 42051), (8667, 25021), (10611, 20437), (14017, 15471)]