21156254

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{487}}^1$

素因数の和:632

約数の個数: 32

約数和(自身を含む): 37946880

約数和(自身を除く): 16790626

約数列:

[1, 2, 7, 14, 29, 58, 107, 203, 214, 406, 487, 749, 974, 1498, 3103, 3409, 6206, 6818, 14123, 21721, 28246, 43442, 52109, 98861, 104218, 197722, 364763, 729526, 1511161, 3022322, 10578127, 21156254]

約数ペア:

[(1, 21156254), (2, 10578127), (7, 3022322), (14, 1511161), (29, 729526), (58, 364763), (107, 197722), (203, 104218), (214, 98861), (406, 52109), (487, 43442), (749, 28246), (974, 21721), (1498, 14123), (3103, 6818), (3409, 6206)]