21081690

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{307}}^1$

素因数の和:436

約数の個数: 96

約数和(自身を含む): 63423360

約数和(自身を除く): 42341670

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 109, 126, 210, 218, 307, 315, 327, 545, 614, 630, 654, 763, 921, 981, 1090, 1526, 1535, 1635, 1842, 1962, 2149, 2289, 2763, 3070, 3270, 3815, 4298, 4578, 4605, 4905, 5526, 6447, 6867, 7630, 9210, 9810, 10745, 11445, 12894, 13734, 13815, 19341, 21490, 22890, 27630, 32235, 33463, 34335, 38682, 64470, 66926, 68670, 96705, 100389, 167315, 193410, 200778, 234241, 301167, 334630, 468482, 501945, 602334, 702723, 1003890, 1171205, 1405446, 1505835, 2108169, 2342410, 3011670, 3513615, 4216338, 7027230, 10540845, 21081690]

約数ペア:

[(1, 21081690), (2, 10540845), (3, 7027230), (5, 4216338), (6, 3513615), (7, 3011670), (9, 2342410), (10, 2108169), (14, 1505835), (15, 1405446), (18, 1171205), (21, 1003890), (30, 702723), (35, 602334), (42, 501945), (45, 468482), (63, 334630), (70, 301167), (90, 234241), (105, 200778), (109, 193410), (126, 167315), (210, 100389), (218, 96705), (307, 68670), (315, 66926), (327, 64470), (545, 38682), (614, 34335), (630, 33463), (654, 32235), (763, 27630), (921, 22890), (981, 21490), (1090, 19341), (1526, 13815), (1535, 13734), (1635, 12894), (1842, 11445), (1962, 10745), (2149, 9810), (2289, 9210), (2763, 7630), (3070, 6867), (3270, 6447), (3815, 5526), (4298, 4905), (4578, 4605)]