21968220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{15919}}^1$

素因数の和:15954

約数の個数: 48

約数和(自身を含む): 64189440

約数和(自身を除く): 42221220

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 115, 138, 230, 276, 345, 460, 690, 1380, 15919, 31838, 47757, 63676, 79595, 95514, 159190, 191028, 238785, 318380, 366137, 477570, 732274, 955140, 1098411, 1464548, 1830685, 2196822, 3661370, 4393644, 5492055, 7322740, 10984110, 21968220]

約数ペア:

[(1, 21968220), (2, 10984110), (3, 7322740), (4, 5492055), (5, 4393644), (6, 3661370), (10, 2196822), (12, 1830685), (15, 1464548), (20, 1098411), (23, 955140), (30, 732274), (46, 477570), (60, 366137), (69, 318380), (92, 238785), (115, 191028), (138, 159190), (230, 95514), (276, 79595), (345, 63676), (460, 47757), (690, 31838), (1380, 15919)]