20563580

素因数分解:

$2^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{3659}}^1$

素因数の和:3949

約数の個数: 24

約数和(自身を含む): 43349040

約数和(自身を除く): 22785460

約数列:

[1, 2, 4, 5, 10, 20, 281, 562, 1124, 1405, 2810, 3659, 5620, 7318, 14636, 18295, 36590, 73180, 1028179, 2056358, 4112716, 5140895, 10281790, 20563580]

約数ペア:

[(1, 20563580), (2, 10281790), (4, 5140895), (5, 4112716), (10, 2056358), (20, 1028179), (281, 73180), (562, 36590), (1124, 18295), (1405, 14636), (2810, 7318), (3659, 5620)]