28903840

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{197}}^1$

素因数の和:350

約数の個数: 96

約数和(自身を含む): 79035264

約数和(自身を除く): 50131424

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 131, 140, 160, 197, 224, 262, 280, 394, 524, 560, 655, 788, 917, 985, 1048, 1120, 1310, 1379, 1576, 1834, 1970, 2096, 2620, 2758, 3152, 3668, 3940, 4192, 4585, 5240, 5516, 6304, 6895, 7336, 7880, 9170, 10480, 11032, 13790, 14672, 15760, 18340, 20960, 22064, 25807, 27580, 29344, 31520, 36680, 44128, 51614, 55160, 73360, 103228, 110320, 129035, 146720, 180649, 206456, 220640, 258070, 361298, 412912, 516140, 722596, 825824, 903245, 1032280, 1445192, 1806490, 2064560, 2890384, 3612980, 4129120, 5780768, 7225960, 14451920, 28903840]

約数ペア:

[(1, 28903840), (2, 14451920), (4, 7225960), (5, 5780768), (7, 4129120), (8, 3612980), (10, 2890384), (14, 2064560), (16, 1806490), (20, 1445192), (28, 1032280), (32, 903245), (35, 825824), (40, 722596), (56, 516140), (70, 412912), (80, 361298), (112, 258070), (131, 220640), (140, 206456), (160, 180649), (197, 146720), (224, 129035), (262, 110320), (280, 103228), (394, 73360), (524, 55160), (560, 51614), (655, 44128), (788, 36680), (917, 31520), (985, 29344), (1048, 27580), (1120, 25807), (1310, 22064), (1379, 20960), (1576, 18340), (1834, 15760), (1970, 14672), (2096, 13790), (2620, 11032), (2758, 10480), (3152, 9170), (3668, 7880), (3940, 7336), (4192, 6895), (4585, 6304), (5240, 5516)]