21071422

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1\times {\mathrm{1451}}^1$

素因数の和:1643

約数の個数: 16

約数和(自身を含む): 32460912

約数和(自身を除く): 11389490

約数列:

[1, 2, 53, 106, 137, 274, 1451, 2902, 7261, 14522, 76903, 153806, 198787, 397574, 10535711, 21071422]

約数ペア:

[(1, 21071422), (2, 10535711), (53, 397574), (106, 198787), (137, 153806), (274, 76903), (1451, 14522), (2902, 7261)]