67968440

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1\times {\mathrm{157}}^1$

素因数の和:384

約数の個数: 64

約数和(自身を含む): 156988800

約数和(自身を除く): 89020360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 137, 157, 158, 274, 314, 316, 395, 548, 628, 632, 685, 785, 790, 1096, 1256, 1370, 1570, 1580, 2740, 3140, 3160, 5480, 6280, 10823, 12403, 21509, 21646, 24806, 43018, 43292, 49612, 54115, 62015, 86036, 86584, 99224, 107545, 108230, 124030, 172072, 215090, 216460, 248060, 430180, 432920, 496120, 860360, 1699211, 3398422, 6796844, 8496055, 13593688, 16992110, 33984220, 67968440]

約数ペア:

[(1, 67968440), (2, 33984220), (4, 16992110), (5, 13593688), (8, 8496055), (10, 6796844), (20, 3398422), (40, 1699211), (79, 860360), (137, 496120), (157, 432920), (158, 430180), (274, 248060), (314, 216460), (316, 215090), (395, 172072), (548, 124030), (628, 108230), (632, 107545), (685, 99224), (785, 86584), (790, 86036), (1096, 62015), (1256, 54115), (1370, 49612), (1570, 43292), (1580, 43018), (2740, 24806), (3140, 21646), (3160, 21509), (5480, 12403), (6280, 10823)]