207979905

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{1980761}}^1$

素因数の和:1980776

約数の個数: 16

約数和(自身を含む): 380306304

約数和(自身を除く): 172326399

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 1980761, 5942283, 9903805, 13865327, 29711415, 41595981, 69326635, 207979905]

約数ペア:

[(1, 207979905), (3, 69326635), (5, 41595981), (7, 29711415), (15, 13865327), (21, 9903805), (35, 5942283), (105, 1980761)]