21059075

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{937}}^1$

素因数の和:1007

約数の個数: 24

約数和(自身を含む): 27914880

約数和(自身を除く): 6855805

約数列:

[1, 5, 25, 29, 31, 145, 155, 725, 775, 899, 937, 4495, 4685, 22475, 23425, 27173, 29047, 135865, 145235, 679325, 726175, 842363, 4211815, 21059075]

約数ペア:

[(1, 21059075), (5, 4211815), (25, 842363), (29, 726175), (31, 679325), (145, 145235), (155, 135865), (725, 29047), (775, 27173), (899, 23425), (937, 22475), (4495, 4685)]