20739201

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{193}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 35031744

約数和(自身を除く): 14292543

約数列:

[1, 3, 7, 17, 21, 43, 49, 51, 119, 129, 147, 193, 301, 357, 579, 731, 833, 903, 1351, 2107, 2193, 2499, 3281, 4053, 5117, 6321, 8299, 9457, 9843, 15351, 22967, 24897, 28371, 35819, 58093, 68901, 107457, 141083, 160769, 174279, 406651, 423249, 482307, 987581, 1219953, 2962743, 6913067, 20739201]

約数ペア:

[(1, 20739201), (3, 6913067), (7, 2962743), (17, 1219953), (21, 987581), (43, 482307), (49, 423249), (51, 406651), (119, 174279), (129, 160769), (147, 141083), (193, 107457), (301, 68901), (357, 58093), (579, 35819), (731, 28371), (833, 24897), (903, 22967), (1351, 15351), (2107, 9843), (2193, 9457), (2499, 8299), (3281, 6321), (4053, 5117)]