21093872

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77551}}^1$

素因数の和:77576

約数の個数: 20

約数和(自身を含む): 43274016

約数和(自身を除く): 22180144

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77551, 155102, 310204, 620408, 1240816, 1318367, 2636734, 5273468, 10546936, 21093872]

約数ペア:

[(1, 21093872), (2, 10546936), (4, 5273468), (8, 2636734), (16, 1318367), (17, 1240816), (34, 620408), (68, 310204), (136, 155102), (272, 77551)]