20009781855

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{4157}}^1$

素因数の和:4278

約数の個数: 144

約数和(自身を含む): 42149147040

約数和(自身を除く): 22139365185

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 37, 45, 49, 59, 63, 105, 111, 147, 177, 185, 245, 259, 295, 315, 333, 413, 441, 531, 555, 735, 777, 885, 1239, 1295, 1665, 1813, 2065, 2183, 2205, 2331, 2655, 2891, 3717, 3885, 4157, 5439, 6195, 6549, 8673, 9065, 10915, 11655, 12471, 14455, 15281, 16317, 18585, 19647, 20785, 26019, 27195, 29099, 32745, 37413, 43365, 45843, 62355, 76405, 81585, 87297, 98235, 106967, 130095, 137529, 145495, 153809, 187065, 203693, 229215, 245263, 261891, 320901, 436485, 461427, 534835, 611079, 687645, 735789, 769045, 962703, 1018465, 1076663, 1226315, 1309455, 1384281, 1604505, 1716841, 1833237, 2207367, 2307135, 3055395, 3229989, 3678945, 4813515, 5150523, 5383315, 6921405, 7536641, 8584205, 9074731, 9166185, 9689967, 11036835, 12017887, 15451569, 16149945, 22609923, 25752615, 27224193, 36053661, 37683205, 45373655, 48449835, 60089435, 63523117, 67829769, 77257845, 81672579, 108160983, 113049615, 136120965, 180268305, 190569351, 317615585, 339148845, 408362895, 444661819, 540804915, 571708053, 952846755, 1333985457, 2223309095, 2858540265, 4001956371, 6669927285, 20009781855]

約数ペア:

[(1, 20009781855), (3, 6669927285), (5, 4001956371), (7, 2858540265), (9, 2223309095), (15, 1333985457), (21, 952846755), (35, 571708053), (37, 540804915), (45, 444661819), (49, 408362895), (59, 339148845), (63, 317615585), (105, 190569351), (111, 180268305), (147, 136120965), (177, 113049615), (185, 108160983), (245, 81672579), (259, 77257845), (295, 67829769), (315, 63523117), (333, 60089435), (413, 48449835), (441, 45373655), (531, 37683205), (555, 36053661), (735, 27224193), (777, 25752615), (885, 22609923), (1239, 16149945), (1295, 15451569), (1665, 12017887), (1813, 11036835), (2065, 9689967), (2183, 9166185), (2205, 9074731), (2331, 8584205), (2655, 7536641), (2891, 6921405), (3717, 5383315), (3885, 5150523), (4157, 4813515), (5439, 3678945), (6195, 3229989), (6549, 3055395), (8673, 2307135), (9065, 2207367), (10915, 1833237), (11655, 1716841), (12471, 1604505), (14455, 1384281), (15281, 1309455), (16317, 1226315), (18585, 1076663), (19647, 1018465), (20785, 962703), (26019, 769045), (27195, 735789), (29099, 687645), (32745, 611079), (37413, 534835), (43365, 461427), (45843, 436485), (62355, 320901), (76405, 261891), (81585, 245263), (87297, 229215), (98235, 203693), (106967, 187065), (130095, 153809), (137529, 145495)]