21184660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21617}}^1$

素因数の和:21640

約数の個数: 36

約数和(自身を含む): 51753492

約数和(自身を除く): 30568832

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21617, 43234, 86468, 108085, 151319, 216170, 302638, 432340, 605276, 756595, 1059233, 1513190, 2118466, 3026380, 4236932, 5296165, 10592330, 21184660]

約数ペア:

[(1, 21184660), (2, 10592330), (4, 5296165), (5, 4236932), (7, 3026380), (10, 2118466), (14, 1513190), (20, 1059233), (28, 756595), (35, 605276), (49, 432340), (70, 302638), (98, 216170), (140, 151319), (196, 108085), (245, 86468), (490, 43234), (980, 21617)]