21281310

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{1321}}^1$

素因数の和:1513

約数の個数: 48

約数和(自身を含む): 55682640

約数和(自身を除く): 34401330

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 179, 358, 537, 895, 1074, 1321, 1611, 1790, 2642, 2685, 3222, 3963, 5370, 6605, 7926, 8055, 11889, 13210, 16110, 19815, 23778, 39630, 59445, 118890, 236459, 472918, 709377, 1182295, 1418754, 2128131, 2364590, 3546885, 4256262, 7093770, 10640655, 21281310]

約数ペア:

[(1, 21281310), (2, 10640655), (3, 7093770), (5, 4256262), (6, 3546885), (9, 2364590), (10, 2128131), (15, 1418754), (18, 1182295), (30, 709377), (45, 472918), (90, 236459), (179, 118890), (358, 59445), (537, 39630), (895, 23778), (1074, 19815), (1321, 16110), (1611, 13210), (1790, 11889), (2642, 8055), (2685, 7926), (3222, 6605), (3963, 5370)]