20416445

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{607}}^1$

素因数の和:681

約数の個数: 24

約数和(自身を含む): 28979712

約数和(自身を除く): 8563267

約数列:

[1, 5, 7, 31, 35, 155, 217, 607, 961, 1085, 3035, 4249, 4805, 6727, 18817, 21245, 33635, 94085, 131719, 583327, 658595, 2916635, 4083289, 20416445]

約数ペア:

[(1, 20416445), (5, 4083289), (7, 2916635), (31, 658595), (35, 583327), (155, 131719), (217, 94085), (607, 33635), (961, 21245), (1085, 18817), (3035, 6727), (4249, 4805)]