6639950

素因数分解:

$2^1\times 5^2\times {\mathrm{41}}^2\times {\mathrm{79}}^1$

素因数の和:173

約数の個数: 36

約数和(自身を含む): 12819120

約数和(自身を除く): 6179170

約数列:

[1, 2, 5, 10, 25, 41, 50, 79, 82, 158, 205, 395, 410, 790, 1025, 1681, 1975, 2050, 3239, 3362, 3950, 6478, 8405, 16195, 16810, 32390, 42025, 80975, 84050, 132799, 161950, 265598, 663995, 1327990, 3319975, 6639950]

約数ペア:

[(1, 6639950), (2, 3319975), (5, 1327990), (10, 663995), (25, 265598), (41, 161950), (50, 132799), (79, 84050), (82, 80975), (158, 42025), (205, 32390), (395, 16810), (410, 16195), (790, 8405), (1025, 6478), (1681, 3950), (1975, 3362), (2050, 3239)]