19998495

素因数分解:

$3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^2$

素因数の和:162

約数の個数: 60

約数和(自身を含む): 39700584

約数和(自身を除く): 19702089

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 67, 81, 99, 135, 165, 201, 297, 335, 405, 495, 603, 737, 891, 1005, 1485, 1809, 2211, 3015, 3685, 4455, 4489, 5427, 6633, 9045, 11055, 13467, 19899, 22445, 27135, 33165, 40401, 49379, 59697, 67335, 99495, 121203, 148137, 202005, 246895, 298485, 363609, 444411, 606015, 740685, 1333233, 1818045, 2222055, 3999699, 6666165, 19998495]

約数ペア:

[(1, 19998495), (3, 6666165), (5, 3999699), (9, 2222055), (11, 1818045), (15, 1333233), (27, 740685), (33, 606015), (45, 444411), (55, 363609), (67, 298485), (81, 246895), (99, 202005), (135, 148137), (165, 121203), (201, 99495), (297, 67335), (335, 59697), (405, 49379), (495, 40401), (603, 33165), (737, 27135), (891, 22445), (1005, 19899), (1485, 13467), (1809, 11055), (2211, 9045), (3015, 6633), (3685, 5427), (4455, 4489)]