21284948

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{149}}^1\times {\mathrm{503}}^1$

素因数の和:727

約数の個数: 24

約数和(自身を含む): 38102400

約数和(自身を除く): 16817452

約数列:

[1, 2, 4, 71, 142, 149, 284, 298, 503, 596, 1006, 2012, 10579, 21158, 35713, 42316, 71426, 74947, 142852, 149894, 299788, 5321237, 10642474, 21284948]

約数ペア:

[(1, 21284948), (2, 10642474), (4, 5321237), (71, 299788), (142, 149894), (149, 142852), (284, 74947), (298, 71426), (503, 42316), (596, 35713), (1006, 21158), (2012, 10579)]