201320721

素因数分解:

$3^4\times 7^1\times {\mathrm{355063}}^1$

素因数の和:355082

約数の個数: 20

約数和(自身を含む): 343701952

約数和(自身を除く): 142381231

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 355063, 1065189, 2485441, 3195567, 7456323, 9586701, 22368969, 28760103, 67106907, 201320721]

約数ペア:

[(1, 201320721), (3, 67106907), (7, 28760103), (9, 22368969), (21, 9586701), (27, 7456323), (63, 3195567), (81, 2485441), (189, 1065189), (567, 355063)]