21679075

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2543}}^1$

素因数の和:2595

約数の個数: 24

約数和(自身を含む): 30283776

約数和(自身を除く): 8604701

約数列:

[1, 5, 11, 25, 31, 55, 155, 275, 341, 775, 1705, 2543, 8525, 12715, 27973, 63575, 78833, 139865, 394165, 699325, 867163, 1970825, 4335815, 21679075]

約数ペア:

[(1, 21679075), (5, 4335815), (11, 1970825), (25, 867163), (31, 699325), (55, 394165), (155, 139865), (275, 78833), (341, 63575), (775, 27973), (1705, 12715), (2543, 8525)]