21140176

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{30727}}^1$

素因数の和:30778

約数の個数: 20

約数和(自身を含む): 41912992

約数和(自身を除く): 20772816

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 30727, 61454, 122908, 245816, 491632, 1321261, 2642522, 5285044, 10570088, 21140176]

約数ペア:

[(1, 21140176), (2, 10570088), (4, 5285044), (8, 2642522), (16, 1321261), (43, 491632), (86, 245816), (172, 122908), (344, 61454), (688, 30727)]