2009140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{127}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 4902912

約数和(自身を除く): 2893772

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 113, 127, 140, 226, 254, 452, 508, 565, 635, 791, 889, 1130, 1270, 1582, 1778, 2260, 2540, 3164, 3556, 3955, 4445, 7910, 8890, 14351, 15820, 17780, 28702, 57404, 71755, 100457, 143510, 200914, 287020, 401828, 502285, 1004570, 2009140]

約数ペア:

[(1, 2009140), (2, 1004570), (4, 502285), (5, 401828), (7, 287020), (10, 200914), (14, 143510), (20, 100457), (28, 71755), (35, 57404), (70, 28702), (113, 17780), (127, 15820), (140, 14351), (226, 8890), (254, 7910), (452, 4445), (508, 3955), (565, 3556), (635, 3164), (791, 2540), (889, 2260), (1130, 1778), (1270, 1582)]