20505726

素因数分解:

$2^1\times 3^2\times {\mathrm{29}}^1\times {\mathrm{163}}^1\times {\mathrm{241}}^1$

素因数の和:441

約数の個数: 48

約数和(自身を含む): 46434960

約数和(自身を除く): 25929234

約数列:

[1, 2, 3, 6, 9, 18, 29, 58, 87, 163, 174, 241, 261, 326, 482, 489, 522, 723, 978, 1446, 1467, 2169, 2934, 4338, 4727, 6989, 9454, 13978, 14181, 20967, 28362, 39283, 41934, 42543, 62901, 78566, 85086, 117849, 125802, 235698, 353547, 707094, 1139207, 2278414, 3417621, 6835242, 10252863, 20505726]

約数ペア:

[(1, 20505726), (2, 10252863), (3, 6835242), (6, 3417621), (9, 2278414), (18, 1139207), (29, 707094), (58, 353547), (87, 235698), (163, 125802), (174, 117849), (241, 85086), (261, 78566), (326, 62901), (482, 42543), (489, 41934), (522, 39283), (723, 28362), (978, 20967), (1446, 14181), (1467, 13978), (2169, 9454), (2934, 6989), (4338, 4727)]