20972280

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{24967}}^1$

素因数の和:24988

約数の個数: 64

約数和(自身を含む): 71907840

約数和(自身を除く): 50935560

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 24967, 49934, 74901, 99868, 124835, 149802, 174769, 199736, 249670, 299604, 349538, 374505, 499340, 524307, 599208, 699076, 749010, 873845, 998680, 1048614, 1398152, 1498020, 1747690, 2097228, 2621535, 2996040, 3495380, 4194456, 5243070, 6990760, 10486140, 20972280]

約数ペア:

[(1, 20972280), (2, 10486140), (3, 6990760), (4, 5243070), (5, 4194456), (6, 3495380), (7, 2996040), (8, 2621535), (10, 2097228), (12, 1747690), (14, 1498020), (15, 1398152), (20, 1048614), (21, 998680), (24, 873845), (28, 749010), (30, 699076), (35, 599208), (40, 524307), (42, 499340), (56, 374505), (60, 349538), (70, 299604), (84, 249670), (105, 199736), (120, 174769), (140, 149802), (168, 124835), (210, 99868), (280, 74901), (420, 49934), (840, 24967)]