289772721

素因数分解:

$3^4\times 7^2\times {\mathrm{73009}}^1$

素因数の和:73035

約数の個数: 30

約数和(自身を含む): 503549970

約数和(自身を除く): 213777249

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323, 3969, 73009, 219027, 511063, 657081, 1533189, 1971243, 3577441, 4599567, 5913729, 10732323, 13798701, 32196969, 41396103, 96590907, 289772721]

約数ペア:

[(1, 289772721), (3, 96590907), (7, 41396103), (9, 32196969), (21, 13798701), (27, 10732323), (49, 5913729), (63, 4599567), (81, 3577441), (147, 1971243), (189, 1533189), (441, 657081), (567, 511063), (1323, 219027), (3969, 73009)]