20129480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1$

素因数の和:151

約数の個数: 128

約数和(自身を含む): 55814400

約数和(自身を除く): 35684920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 37, 40, 56, 58, 67, 70, 74, 116, 134, 140, 145, 148, 185, 203, 232, 259, 268, 280, 290, 296, 335, 370, 406, 469, 518, 536, 580, 670, 740, 812, 938, 1015, 1036, 1073, 1160, 1295, 1340, 1480, 1624, 1876, 1943, 2030, 2072, 2146, 2345, 2479, 2590, 2680, 3752, 3886, 4060, 4292, 4690, 4958, 5180, 5365, 7511, 7772, 8120, 8584, 9380, 9715, 9916, 10360, 10730, 12395, 13601, 15022, 15544, 17353, 18760, 19430, 19832, 21460, 24790, 27202, 30044, 34706, 37555, 38860, 42920, 49580, 54404, 60088, 68005, 69412, 71891, 75110, 77720, 86765, 99160, 108808, 136010, 138824, 143782, 150220, 173530, 272020, 287564, 300440, 347060, 359455, 503237, 544040, 575128, 694120, 718910, 1006474, 1437820, 2012948, 2516185, 2875640, 4025896, 5032370, 10064740, 20129480]

約数ペア:

[(1, 20129480), (2, 10064740), (4, 5032370), (5, 4025896), (7, 2875640), (8, 2516185), (10, 2012948), (14, 1437820), (20, 1006474), (28, 718910), (29, 694120), (35, 575128), (37, 544040), (40, 503237), (56, 359455), (58, 347060), (67, 300440), (70, 287564), (74, 272020), (116, 173530), (134, 150220), (140, 143782), (145, 138824), (148, 136010), (185, 108808), (203, 99160), (232, 86765), (259, 77720), (268, 75110), (280, 71891), (290, 69412), (296, 68005), (335, 60088), (370, 54404), (406, 49580), (469, 42920), (518, 38860), (536, 37555), (580, 34706), (670, 30044), (740, 27202), (812, 24790), (938, 21460), (1015, 19832), (1036, 19430), (1073, 18760), (1160, 17353), (1295, 15544), (1340, 15022), (1480, 13601), (1624, 12395), (1876, 10730), (1943, 10360), (2030, 9916), (2072, 9715), (2146, 9380), (2345, 8584), (2479, 8120), (2590, 7772), (2680, 7511), (3752, 5365), (3886, 5180), (4060, 4958), (4292, 4690)]