21356836

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{1861}}^1$

素因数の和:2035

約数の個数: 24

約数和(自身を含む): 39623360

約数和(自身を除く): 18266524

約数列:

[1, 2, 4, 19, 38, 76, 151, 302, 604, 1861, 2869, 3722, 5738, 7444, 11476, 35359, 70718, 141436, 281011, 562022, 1124044, 5339209, 10678418, 21356836]

約数ペア:

[(1, 21356836), (2, 10678418), (4, 5339209), (19, 1124044), (38, 562022), (76, 281011), (151, 141436), (302, 70718), (604, 35359), (1861, 11476), (2869, 7444), (3722, 5738)]