21617812

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{1237}}^1$

素因数の和:1515

約数の個数: 24

約数和(自身を含む): 40244904

約数和(自身を除く): 18627092

約数列:

[1, 2, 4, 17, 34, 68, 257, 514, 1028, 1237, 2474, 4369, 4948, 8738, 17476, 21029, 42058, 84116, 317909, 635818, 1271636, 5404453, 10808906, 21617812]

約数ペア:

[(1, 21617812), (2, 10808906), (4, 5404453), (17, 1271636), (34, 635818), (68, 317909), (257, 84116), (514, 42058), (1028, 21029), (1237, 17476), (2474, 8738), (4369, 4948)]