221435739

素因数分解:

$3^2\times 7^1\times {\mathrm{277}}^1\times {\mathrm{12689}}^1$

素因数の和:12979

約数の個数: 24

約数和(自身を含む): 366893280

約数和(自身を除く): 145457541

約数列:

[1, 3, 7, 9, 21, 63, 277, 831, 1939, 2493, 5817, 12689, 17451, 38067, 88823, 114201, 266469, 799407, 3514853, 10544559, 24603971, 31633677, 73811913, 221435739]

約数ペア:

[(1, 221435739), (3, 73811913), (7, 31633677), (9, 24603971), (21, 10544559), (63, 3514853), (277, 799407), (831, 266469), (1939, 114201), (2493, 88823), (5817, 38067), (12689, 17451)]