20510780

素因数分解:

$2^2\times 5^1\times {\mathrm{479}}^1\times {\mathrm{2141}}^1$

素因数の和:2629

約数の個数: 24

約数和(自身を含む): 43182720

約数和(自身を除く): 22671940

約数列:

[1, 2, 4, 5, 10, 20, 479, 958, 1916, 2141, 2395, 4282, 4790, 8564, 9580, 10705, 21410, 42820, 1025539, 2051078, 4102156, 5127695, 10255390, 20510780]

約数ペア:

[(1, 20510780), (2, 10255390), (4, 5127695), (5, 4102156), (10, 2051078), (20, 1025539), (479, 42820), (958, 21410), (1916, 10705), (2141, 9580), (2395, 8564), (4282, 4790)]