1005291

素因数分解:

$3^6\times 7^1\times {\mathrm{197}}^1$

素因数の和:222

約数の個数: 28

約数和(自身を含む): 1731312

約数和(自身を除く): 726021

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 197, 243, 567, 591, 729, 1379, 1701, 1773, 4137, 5103, 5319, 12411, 15957, 37233, 47871, 111699, 143613, 335097, 1005291]

約数ペア:

[(1, 1005291), (3, 335097), (7, 143613), (9, 111699), (21, 47871), (27, 37233), (63, 15957), (81, 12411), (189, 5319), (197, 5103), (243, 4137), (567, 1773), (591, 1701), (729, 1379)]