20808284

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{409}}^1$

素因数の和:522

約数の個数: 48

約数和(自身を含む): 44083200

約数和(自身を除く): 23274916

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 79, 92, 158, 161, 316, 322, 409, 553, 644, 818, 1106, 1636, 1817, 2212, 2863, 3634, 5726, 7268, 9407, 11452, 12719, 18814, 25438, 32311, 37628, 50876, 64622, 65849, 129244, 131698, 226177, 263396, 452354, 743153, 904708, 1486306, 2972612, 5202071, 10404142, 20808284]

約数ペア:

[(1, 20808284), (2, 10404142), (4, 5202071), (7, 2972612), (14, 1486306), (23, 904708), (28, 743153), (46, 452354), (79, 263396), (92, 226177), (158, 131698), (161, 129244), (316, 65849), (322, 64622), (409, 50876), (553, 37628), (644, 32311), (818, 25438), (1106, 18814), (1636, 12719), (1817, 11452), (2212, 9407), (2863, 7268), (3634, 5726)]