21206556

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{28051}}^1$

素因数の和:28071

約数の個数: 48

約数和(自身を含む): 62836480

約数和(自身を除く): 41629924

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 189, 252, 378, 756, 28051, 56102, 84153, 112204, 168306, 196357, 252459, 336612, 392714, 504918, 589071, 757377, 785428, 1009836, 1178142, 1514754, 1767213, 2356284, 3029508, 3534426, 5301639, 7068852, 10603278, 21206556]

約数ペア:

[(1, 21206556), (2, 10603278), (3, 7068852), (4, 5301639), (6, 3534426), (7, 3029508), (9, 2356284), (12, 1767213), (14, 1514754), (18, 1178142), (21, 1009836), (27, 785428), (28, 757377), (36, 589071), (42, 504918), (54, 392714), (63, 336612), (84, 252459), (108, 196357), (126, 168306), (189, 112204), (252, 84153), (378, 56102), (756, 28051)]