207923121

素因数分解:

$3^2\times 7^2\times {\mathrm{471481}}^1$

素因数の和:471501

約数の個数: 18

約数和(自身を含む): 349368162

約数和(自身を除く): 141445041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 471481, 1414443, 3300367, 4243329, 9901101, 23102569, 29703303, 69307707, 207923121]

約数ペア:

[(1, 207923121), (3, 69307707), (7, 29703303), (9, 23102569), (21, 9901101), (49, 4243329), (63, 3300367), (147, 1414443), (441, 471481)]