21699975

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{907}}^1$

素因数の和:960

約数の個数: 48

約数和(自身を含む): 40533120

約数和(自身を除く): 18833145

約数列:

[1, 3, 5, 11, 15, 25, 29, 33, 55, 75, 87, 145, 165, 275, 319, 435, 725, 825, 907, 957, 1595, 2175, 2721, 4535, 4785, 7975, 9977, 13605, 22675, 23925, 26303, 29931, 49885, 68025, 78909, 131515, 149655, 249425, 289333, 394545, 657575, 748275, 867999, 1446665, 1972725, 4339995, 7233325, 21699975]

約数ペア:

[(1, 21699975), (3, 7233325), (5, 4339995), (11, 1972725), (15, 1446665), (25, 867999), (29, 748275), (33, 657575), (55, 394545), (75, 289333), (87, 249425), (145, 149655), (165, 131515), (275, 78909), (319, 68025), (435, 49885), (725, 29931), (825, 26303), (907, 23925), (957, 22675), (1595, 13605), (2175, 9977), (2721, 7975), (4535, 4785)]