217810719

素因数分解:

$3^2\times 7^1\times {\mathrm{1747}}^1\times {\mathrm{1979}}^1$

素因数の和:3739

約数の個数: 24

約数和(自身を含む): 359948160

約数和(自身を除く): 142137441

約数列:

[1, 3, 7, 9, 21, 63, 1747, 1979, 5241, 5937, 12229, 13853, 15723, 17811, 36687, 41559, 110061, 124677, 3457313, 10371939, 24201191, 31115817, 72603573, 217810719]

約数ペア:

[(1, 217810719), (3, 72603573), (7, 31115817), (9, 24201191), (21, 10371939), (63, 3457313), (1747, 124677), (1979, 110061), (5241, 41559), (5937, 36687), (12229, 17811), (13853, 15723)]