21125076

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{971}}^1$

素因数の和:1029

約数の個数: 72

約数和(自身を含む): 58949856

約数和(自身を除く): 37824780

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 37, 42, 49, 74, 84, 98, 111, 147, 148, 196, 222, 259, 294, 444, 518, 588, 777, 971, 1036, 1554, 1813, 1942, 2913, 3108, 3626, 3884, 5439, 5826, 6797, 7252, 10878, 11652, 13594, 20391, 21756, 27188, 35927, 40782, 47579, 71854, 81564, 95158, 107781, 142737, 143708, 190316, 215562, 251489, 285474, 431124, 502978, 570948, 754467, 1005956, 1508934, 1760423, 3017868, 3520846, 5281269, 7041692, 10562538, 21125076]

約数ペア:

[(1, 21125076), (2, 10562538), (3, 7041692), (4, 5281269), (6, 3520846), (7, 3017868), (12, 1760423), (14, 1508934), (21, 1005956), (28, 754467), (37, 570948), (42, 502978), (49, 431124), (74, 285474), (84, 251489), (98, 215562), (111, 190316), (147, 143708), (148, 142737), (196, 107781), (222, 95158), (259, 81564), (294, 71854), (444, 47579), (518, 40782), (588, 35927), (777, 27188), (971, 21756), (1036, 20391), (1554, 13594), (1813, 11652), (1942, 10878), (2913, 7252), (3108, 6797), (3626, 5826), (3884, 5439)]