1990262020

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{191}}^1\times {\mathrm{3803}}^1$

素因数の和:4140

約数の個数: 48

約数和(自身を含む): 4233212928

約数和(自身を除く): 2242950908

約数列:

[1, 2, 4, 5, 10, 20, 137, 191, 274, 382, 548, 685, 764, 955, 1370, 1910, 2740, 3803, 3820, 7606, 15212, 19015, 26167, 38030, 52334, 76060, 104668, 130835, 261670, 521011, 523340, 726373, 1042022, 1452746, 2084044, 2605055, 2905492, 3631865, 5210110, 7263730, 10420220, 14527460, 99513101, 199026202, 398052404, 497565505, 995131010, 1990262020]

約数ペア:

[(1, 1990262020), (2, 995131010), (4, 497565505), (5, 398052404), (10, 199026202), (20, 99513101), (137, 14527460), (191, 10420220), (274, 7263730), (382, 5210110), (548, 3631865), (685, 2905492), (764, 2605055), (955, 2084044), (1370, 1452746), (1910, 1042022), (2740, 726373), (3803, 523340), (3820, 521011), (7606, 261670), (15212, 130835), (19015, 104668), (26167, 76060), (38030, 52334)]