28189580

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1\times {\mathrm{193}}^1$

素因数の和:378

約数の個数: 48

約数和(自身を含む): 60947040

約数和(自身を除く): 32757460

約数列:

[1, 2, 4, 5, 10, 20, 67, 109, 134, 193, 218, 268, 335, 386, 436, 545, 670, 772, 965, 1090, 1340, 1930, 2180, 3860, 7303, 12931, 14606, 21037, 25862, 29212, 36515, 42074, 51724, 64655, 73030, 84148, 105185, 129310, 146060, 210370, 258620, 420740, 1409479, 2818958, 5637916, 7047395, 14094790, 28189580]

約数ペア:

[(1, 28189580), (2, 14094790), (4, 7047395), (5, 5637916), (10, 2818958), (20, 1409479), (67, 420740), (109, 258620), (134, 210370), (193, 146060), (218, 129310), (268, 105185), (335, 84148), (386, 73030), (436, 64655), (545, 51724), (670, 42074), (772, 36515), (965, 29212), (1090, 25862), (1340, 21037), (1930, 14606), (2180, 12931), (3860, 7303)]