279797721

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1\times {\mathrm{1439}}^1$

素因数の和:1693

約数の個数: 32

約数和(自身を含む): 437944320

約数和(自身を除く): 158146599

約数列:

[1, 3, 7, 21, 47, 141, 197, 329, 591, 987, 1379, 1439, 4137, 4317, 9259, 10073, 27777, 30219, 64813, 67633, 194439, 202899, 283483, 473431, 850449, 1420293, 1984381, 5953143, 13323701, 39971103, 93265907, 279797721]

約数ペア:

[(1, 279797721), (3, 93265907), (7, 39971103), (21, 13323701), (47, 5953143), (141, 1984381), (197, 1420293), (329, 850449), (591, 473431), (987, 283483), (1379, 202899), (1439, 194439), (4137, 67633), (4317, 64813), (9259, 30219), (10073, 27777)]