19948640

素因数分解:

$2^5\times 5^1\times {\mathrm{124679}}^1$

素因数の和:124694

約数の個数: 24

約数和(自身を含む): 47129040

約数和(自身を除く): 27180400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 124679, 249358, 498716, 623395, 997432, 1246790, 1994864, 2493580, 3989728, 4987160, 9974320, 19948640]

約数ペア:

[(1, 19948640), (2, 9974320), (4, 4987160), (5, 3989728), (8, 2493580), (10, 1994864), (16, 1246790), (20, 997432), (32, 623395), (40, 498716), (80, 249358), (160, 124679)]