20686490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{1039}}^1$

素因数の和:1238

約数の個数: 32

約数和(自身を含む): 40884480

約数和(自身を除く): 20197990

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 181, 362, 905, 1039, 1810, 1991, 2078, 3982, 5195, 9955, 10390, 11429, 19910, 22858, 57145, 114290, 188059, 376118, 940295, 1880590, 2068649, 4137298, 10343245, 20686490]

約数ペア:

[(1, 20686490), (2, 10343245), (5, 4137298), (10, 2068649), (11, 1880590), (22, 940295), (55, 376118), (110, 188059), (181, 114290), (362, 57145), (905, 22858), (1039, 19910), (1810, 11429), (1991, 10390), (2078, 9955), (3982, 5195)]