21617585

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{743}}^1$

素因数の和:805

約数の個数: 24

約数和(自身を含む): 29623104

約数和(自身を除く): 8005519

約数列:

[1, 5, 11, 23, 55, 115, 253, 529, 743, 1265, 2645, 3715, 5819, 8173, 17089, 29095, 40865, 85445, 187979, 393047, 939895, 1965235, 4323517, 21617585]

約数ペア:

[(1, 21617585), (5, 4323517), (11, 1965235), (23, 939895), (55, 393047), (115, 187979), (253, 85445), (529, 40865), (743, 29095), (1265, 17089), (2645, 8173), (3715, 5819)]