20857500279

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{104869}}^1$

素因数の和:104941

約数の個数: 72

約数和(自身を含む): 39165169680

約数和(自身を除く): 18307669401

約数列:

[1, 3, 7, 9, 11, 21, 33, 41, 49, 63, 77, 99, 123, 147, 231, 287, 369, 441, 451, 539, 693, 861, 1353, 1617, 2009, 2583, 3157, 4059, 4851, 6027, 9471, 18081, 22099, 28413, 66297, 104869, 198891, 314607, 734083, 943821, 1153559, 2202249, 3460677, 4299629, 5138581, 6606747, 8074913, 10382031, 12898887, 15415743, 24224739, 30097403, 38696661, 46247229, 47295919, 56524391, 72674217, 90292209, 141887757, 169573173, 210681821, 270876627, 331071433, 425663271, 508719519, 632045463, 993214299, 1896136389, 2317500031, 2979642897, 6952500093, 20857500279]

約数ペア:

[(1, 20857500279), (3, 6952500093), (7, 2979642897), (9, 2317500031), (11, 1896136389), (21, 993214299), (33, 632045463), (41, 508719519), (49, 425663271), (63, 331071433), (77, 270876627), (99, 210681821), (123, 169573173), (147, 141887757), (231, 90292209), (287, 72674217), (369, 56524391), (441, 47295919), (451, 46247229), (539, 38696661), (693, 30097403), (861, 24224739), (1353, 15415743), (1617, 12898887), (2009, 10382031), (2583, 8074913), (3157, 6606747), (4059, 5138581), (4851, 4299629), (6027, 3460677), (9471, 2202249), (18081, 1153559), (22099, 943821), (28413, 734083), (66297, 314607), (104869, 198891)]