21781624

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{160159}}^1$

素因数の和:160182

約数の個数: 16

約数和(自身を含む): 43243200

約数和(自身を除く): 21461576

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 160159, 320318, 640636, 1281272, 2722703, 5445406, 10890812, 21781624]

約数ペア:

[(1, 21781624), (2, 10890812), (4, 5445406), (8, 2722703), (17, 1281272), (34, 640636), (68, 320318), (136, 160159)]