19911177

素因数分解:

$3^6\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1$

素因数の和:233

約数の個数: 56

約数和(自身を含む): 35255808

約数和(自身を除く): 15344631

約数列:

[1, 3, 9, 11, 13, 27, 33, 39, 81, 99, 117, 143, 191, 243, 297, 351, 429, 573, 729, 891, 1053, 1287, 1719, 2101, 2483, 2673, 3159, 3861, 5157, 6303, 7449, 8019, 9477, 11583, 15471, 18909, 22347, 27313, 34749, 46413, 56727, 67041, 81939, 104247, 139239, 170181, 201123, 245817, 510543, 603369, 737451, 1531629, 1810107, 2212353, 6637059, 19911177]

約数ペア:

[(1, 19911177), (3, 6637059), (9, 2212353), (11, 1810107), (13, 1531629), (27, 737451), (33, 603369), (39, 510543), (81, 245817), (99, 201123), (117, 170181), (143, 139239), (191, 104247), (243, 81939), (297, 67041), (351, 56727), (429, 46413), (573, 34749), (729, 27313), (891, 22347), (1053, 18909), (1287, 15471), (1719, 11583), (2101, 9477), (2483, 8019), (2673, 7449), (3159, 6303), (3861, 5157)]