21184268

素因数分解:

$2^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{3727}}^1$

素因数の和:3774

約数の個数: 36

約数和(自身を含む): 44624160

約数和(自身を除く): 23439892

約数列:

[1, 2, 4, 7, 14, 28, 29, 49, 58, 98, 116, 196, 203, 406, 812, 1421, 2842, 3727, 5684, 7454, 14908, 26089, 52178, 104356, 108083, 182623, 216166, 365246, 432332, 730492, 756581, 1513162, 3026324, 5296067, 10592134, 21184268]

約数ペア:

[(1, 21184268), (2, 10592134), (4, 5296067), (7, 3026324), (14, 1513162), (28, 756581), (29, 730492), (49, 432332), (58, 365246), (98, 216166), (116, 182623), (196, 108083), (203, 104356), (406, 52178), (812, 26089), (1421, 14908), (2842, 7454), (3727, 5684)]