21181132

素因数分解:

$2^2\times 7^2\times {\mathrm{53}}^1\times {\mathrm{2039}}^1$

素因数の和:2110

約数の個数: 36

約数和(自身を含む): 43953840

約数和(自身を除く): 22772708

約数列:

[1, 2, 4, 7, 14, 28, 49, 53, 98, 106, 196, 212, 371, 742, 1484, 2039, 2597, 4078, 5194, 8156, 10388, 14273, 28546, 57092, 99911, 108067, 199822, 216134, 399644, 432268, 756469, 1512938, 3025876, 5295283, 10590566, 21181132]

約数ペア:

[(1, 21181132), (2, 10590566), (4, 5295283), (7, 3025876), (14, 1512938), (28, 756469), (49, 432268), (53, 399644), (98, 216134), (106, 199822), (196, 108067), (212, 99911), (371, 57092), (742, 28546), (1484, 14273), (2039, 10388), (2597, 8156), (4078, 5194)]