20285307

素因数分解:

$3^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{2161}}^1$

素因数の和:2323

約数の個数: 24

約数和(自身を含む): 33727200

約数和(自身を除く): 13441893

約数列:

[1, 3, 7, 9, 21, 63, 149, 447, 1043, 1341, 2161, 3129, 6483, 9387, 15127, 19449, 45381, 136143, 321989, 965967, 2253923, 2897901, 6761769, 20285307]

約数ペア:

[(1, 20285307), (3, 6761769), (7, 2897901), (9, 2253923), (21, 965967), (63, 321989), (149, 136143), (447, 45381), (1043, 19449), (1341, 15127), (2161, 9387), (3129, 6483)]