217979967

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{479}}^1\times {\mathrm{8923}}^1$

素因数の和:9422

約数の個数: 16

約数和(自身を含む): 308413440

約数和(自身を除く): 90433473

約数列:

[1, 3, 17, 51, 479, 1437, 8143, 8923, 24429, 26769, 151691, 455073, 4274117, 12822351, 72659989, 217979967]

約数ペア:

[(1, 217979967), (3, 72659989), (17, 12822351), (51, 4274117), (479, 455073), (1437, 151691), (8143, 26769), (8923, 24429)]