20741656

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{53}}^2\times {\mathrm{71}}^1$

素因数の和:196

約数の個数: 48

約数和(自身を含む): 43288560

約数和(自身を除く): 22546904

約数列:

[1, 2, 4, 8, 13, 26, 52, 53, 71, 104, 106, 142, 212, 284, 424, 568, 689, 923, 1378, 1846, 2756, 2809, 3692, 3763, 5512, 5618, 7384, 7526, 11236, 15052, 22472, 30104, 36517, 48919, 73034, 97838, 146068, 195676, 199439, 292136, 391352, 398878, 797756, 1595512, 2592707, 5185414, 10370828, 20741656]

約数ペア:

[(1, 20741656), (2, 10370828), (4, 5185414), (8, 2592707), (13, 1595512), (26, 797756), (52, 398878), (53, 391352), (71, 292136), (104, 199439), (106, 195676), (142, 146068), (212, 97838), (284, 73034), (424, 48919), (568, 36517), (689, 30104), (923, 22472), (1378, 15052), (1846, 11236), (2756, 7526), (2809, 7384), (3692, 5618), (3763, 5512)]