21658868

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{70321}}^1$

素因数の和:70343

約数の個数: 24

約数和(自身を含む): 47256384

約数和(自身を除く): 25597516

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 70321, 140642, 281284, 492247, 773531, 984494, 1547062, 1968988, 3094124, 5414717, 10829434, 21658868]

約数ペア:

[(1, 21658868), (2, 10829434), (4, 5414717), (7, 3094124), (11, 1968988), (14, 1547062), (22, 984494), (28, 773531), (44, 492247), (77, 281284), (154, 140642), (308, 70321)]