21818115

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{4007}}^1$

素因数の和:4040

約数の個数: 36

約数和(自身を含む): 41578992

約数和(自身を除く): 19760877

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 121, 165, 363, 495, 605, 1089, 1815, 4007, 5445, 12021, 20035, 36063, 44077, 60105, 132231, 180315, 220385, 396693, 484847, 661155, 1454541, 1983465, 2424235, 4363623, 7272705, 21818115]

約数ペア:

[(1, 21818115), (3, 7272705), (5, 4363623), (9, 2424235), (11, 1983465), (15, 1454541), (33, 661155), (45, 484847), (55, 396693), (99, 220385), (121, 180315), (165, 132231), (363, 60105), (495, 44077), (605, 36063), (1089, 20035), (1815, 12021), (4007, 5445)]