21474921

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{397}}^1$

素因数の和:505

約数の個数: 32

約数和(自身を含む): 32986240

約数和(自身を除く): 11511319

約数列:

[1, 3, 13, 19, 39, 57, 73, 219, 247, 397, 741, 949, 1191, 1387, 2847, 4161, 5161, 7543, 15483, 18031, 22629, 28981, 54093, 86943, 98059, 294177, 376753, 550639, 1130259, 1651917, 7158307, 21474921]

約数ペア:

[(1, 21474921), (3, 7158307), (13, 1651917), (19, 1130259), (39, 550639), (57, 376753), (73, 294177), (219, 98059), (247, 86943), (397, 54093), (741, 28981), (949, 22629), (1191, 18031), (1387, 15483), (2847, 7543), (4161, 5161)]