19811043

素因数分解:

$3^2\times 7^2\times {\mathrm{167}}^1\times {\mathrm{269}}^1$

素因数の和:456

約数の個数: 36

約数和(自身を含む): 33611760

約数和(自身を除く): 13800717

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 167, 269, 441, 501, 807, 1169, 1503, 1883, 2421, 3507, 5649, 8183, 10521, 13181, 16947, 24549, 39543, 44923, 73647, 118629, 134769, 314461, 404307, 943383, 2201227, 2830149, 6603681, 19811043]

約数ペア:

[(1, 19811043), (3, 6603681), (7, 2830149), (9, 2201227), (21, 943383), (49, 404307), (63, 314461), (147, 134769), (167, 118629), (269, 73647), (441, 44923), (501, 39543), (807, 24549), (1169, 16947), (1503, 13181), (1883, 10521), (2421, 8183), (3507, 5649)]