201649581

素因数分解:

$3^4\times 7^1\times {\mathrm{355643}}^1$

素因数の和:355662

約数の個数: 20

約数和(自身を含む): 344263392

約数和(自身を除く): 142613811

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 355643, 1066929, 2489501, 3200787, 7468503, 9602361, 22405509, 28807083, 67216527, 201649581]

約数ペア:

[(1, 201649581), (3, 67216527), (7, 28807083), (9, 22405509), (21, 9602361), (27, 7468503), (63, 3200787), (81, 2489501), (189, 1066929), (567, 355643)]