21308908

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{229}}^1\times {\mathrm{541}}^1$

素因数の和:817

約数の個数: 24

約数和(自身を含む): 38395280

約数和(自身を除く): 17086372

約数列:

[1, 2, 4, 43, 86, 172, 229, 458, 541, 916, 1082, 2164, 9847, 19694, 23263, 39388, 46526, 93052, 123889, 247778, 495556, 5327227, 10654454, 21308908]

約数ペア:

[(1, 21308908), (2, 10654454), (4, 5327227), (43, 495556), (86, 247778), (172, 123889), (229, 93052), (458, 46526), (541, 39388), (916, 23263), (1082, 19694), (2164, 9847)]