2163105

素因数分解:

$3^4\times 5^1\times 7^2\times {\mathrm{109}}^1$

素因数の和:140

約数の個数: 60

約数和(自身を含む): 4552020

約数和(自身を除く): 2388915

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 81, 105, 109, 135, 147, 189, 245, 315, 327, 405, 441, 545, 567, 735, 763, 945, 981, 1323, 1635, 2205, 2289, 2835, 2943, 3815, 3969, 4905, 5341, 6615, 6867, 8829, 11445, 14715, 16023, 19845, 20601, 26705, 34335, 44145, 48069, 61803, 80115, 103005, 144207, 240345, 309015, 432621, 721035, 2163105]

約数ペア:

[(1, 2163105), (3, 721035), (5, 432621), (7, 309015), (9, 240345), (15, 144207), (21, 103005), (27, 80115), (35, 61803), (45, 48069), (49, 44145), (63, 34335), (81, 26705), (105, 20601), (109, 19845), (135, 16023), (147, 14715), (189, 11445), (245, 8829), (315, 6867), (327, 6615), (405, 5341), (441, 4905), (545, 3969), (567, 3815), (735, 2943), (763, 2835), (945, 2289), (981, 2205), (1323, 1635)]