21764918

素因数分解:

$2^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{11689}}^1$

素因数の和:11724

約数の個数: 24

約数和(自身を含む): 39979800

約数和(自身を除く): 18214882

約数列:

[1, 2, 7, 14, 19, 38, 49, 98, 133, 266, 931, 1862, 11689, 23378, 81823, 163646, 222091, 444182, 572761, 1145522, 1554637, 3109274, 10882459, 21764918]

約数ペア:

[(1, 21764918), (2, 10882459), (7, 3109274), (14, 1554637), (19, 1145522), (38, 572761), (49, 444182), (98, 222091), (133, 163646), (266, 81823), (931, 23378), (1862, 11689)]