217811120

素因数分解:

$2^4\times 5^1\times {\mathrm{2722639}}^1$

素因数の和:2722652

約数の個数: 20

約数和(自身を含む): 506411040

約数和(自身を除く): 288599920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2722639, 5445278, 10890556, 13613195, 21781112, 27226390, 43562224, 54452780, 108905560, 217811120]

約数ペア:

[(1, 217811120), (2, 108905560), (4, 54452780), (5, 43562224), (8, 27226390), (10, 21781112), (16, 13613195), (20, 10890556), (40, 5445278), (80, 2722639)]