21292912

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{30949}}^1$

素因数の和:31000

約数の個数: 20

約数和(自身を含む): 42215800

約数和(自身を除く): 20922888

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 30949, 61898, 123796, 247592, 495184, 1330807, 2661614, 5323228, 10646456, 21292912]

約数ペア:

[(1, 21292912), (2, 10646456), (4, 5323228), (8, 2661614), (16, 1330807), (43, 495184), (86, 247592), (172, 123796), (344, 61898), (688, 30949)]