18978795

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1667}}^1$

素因数の和:1712

約数の個数: 48

約数和(自身を含む): 37469952

約数和(自身を除く): 18491157

約数列:

[1, 3, 5, 9, 11, 15, 23, 33, 45, 55, 69, 99, 115, 165, 207, 253, 345, 495, 759, 1035, 1265, 1667, 2277, 3795, 5001, 8335, 11385, 15003, 18337, 25005, 38341, 55011, 75015, 91685, 115023, 165033, 191705, 275055, 345069, 421751, 575115, 825165, 1265253, 1725345, 2108755, 3795759, 6326265, 18978795]

約数ペア:

[(1, 18978795), (3, 6326265), (5, 3795759), (9, 2108755), (11, 1725345), (15, 1265253), (23, 825165), (33, 575115), (45, 421751), (55, 345069), (69, 275055), (99, 191705), (115, 165033), (165, 115023), (207, 91685), (253, 75015), (345, 55011), (495, 38341), (759, 25005), (1035, 18337), (1265, 15003), (1667, 11385), (2277, 8335), (3795, 5001)]