21806675

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{443}}^1$

素因数の和:643

約数の個数: 24

約数和(自身を含む): 29730240

約数和(自身を除く): 7923565

約数列:

[1, 5, 11, 25, 55, 179, 275, 443, 895, 1969, 2215, 4475, 4873, 9845, 11075, 24365, 49225, 79297, 121825, 396485, 872267, 1982425, 4361335, 21806675]

約数ペア:

[(1, 21806675), (5, 4361335), (11, 1982425), (25, 872267), (55, 396485), (179, 121825), (275, 79297), (443, 49225), (895, 24365), (1969, 11075), (2215, 9845), (4475, 4873)]