21513855

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{5669}}^1$

素因数の和:5711

約数の個数: 32

約数和(自身を含む): 39191040

約数和(自身を除く): 17677185

約数列:

[1, 3, 5, 11, 15, 23, 33, 55, 69, 115, 165, 253, 345, 759, 1265, 3795, 5669, 17007, 28345, 62359, 85035, 130387, 187077, 311795, 391161, 651935, 935385, 1434257, 1955805, 4302771, 7171285, 21513855]

約数ペア:

[(1, 21513855), (3, 7171285), (5, 4302771), (11, 1955805), (15, 1434257), (23, 935385), (33, 651935), (55, 391161), (69, 311795), (115, 187077), (165, 130387), (253, 85035), (345, 62359), (759, 28345), (1265, 17007), (3795, 5669)]