21222915

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1889}}^1$

素因数の和:2011

約数の個数: 32

約数和(自身を含む): 39191040

約数和(自身を除く): 17968125

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 107, 321, 535, 749, 1605, 1889, 2247, 3745, 5667, 9445, 11235, 13223, 28335, 39669, 66115, 198345, 202123, 606369, 1010615, 1414861, 3031845, 4244583, 7074305, 21222915]

約数ペア:

[(1, 21222915), (3, 7074305), (5, 4244583), (7, 3031845), (15, 1414861), (21, 1010615), (35, 606369), (105, 202123), (107, 198345), (321, 66115), (535, 39669), (749, 28335), (1605, 13223), (1889, 11235), (2247, 9445), (3745, 5667)]