20971785

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{1303}}^1$

素因数の和:1377

約数の個数: 32

約数和(自身を含む): 35677440

約数和(自身を除く): 14705655

約数列:

[1, 3, 5, 15, 29, 37, 87, 111, 145, 185, 435, 555, 1073, 1303, 3219, 3909, 5365, 6515, 16095, 19545, 37787, 48211, 113361, 144633, 188935, 241055, 566805, 723165, 1398119, 4194357, 6990595, 20971785]

約数ペア:

[(1, 20971785), (3, 6990595), (5, 4194357), (15, 1398119), (29, 723165), (37, 566805), (87, 241055), (111, 188935), (145, 144633), (185, 113361), (435, 48211), (555, 37787), (1073, 19545), (1303, 16095), (3219, 6515), (3909, 5365)]