20455743

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5209}}^1$

素因数の和:5247

約数の個数: 32

約数和(自身を含む): 36011520

約数和(自身を除く): 15555777

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 77, 119, 187, 231, 357, 561, 1309, 3927, 5209, 15627, 36463, 57299, 88553, 109389, 171897, 265659, 401093, 619871, 974083, 1203279, 1859613, 2922249, 6818581, 20455743]

約数ペア:

[(1, 20455743), (3, 6818581), (7, 2922249), (11, 1859613), (17, 1203279), (21, 974083), (33, 619871), (51, 401093), (77, 265659), (119, 171897), (187, 109389), (231, 88553), (357, 57299), (561, 36463), (1309, 15627), (3927, 5209)]