20378924

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{991}}^1$

素因数の和:1145

約数の個数: 24

約数和(自身を含む): 36747648

約数和(自身を除く): 16368724

約数列:

[1, 2, 4, 53, 97, 106, 194, 212, 388, 991, 1982, 3964, 5141, 10282, 20564, 52523, 96127, 105046, 192254, 210092, 384508, 5094731, 10189462, 20378924]

約数ペア:

[(1, 20378924), (2, 10189462), (4, 5094731), (53, 384508), (97, 210092), (106, 192254), (194, 105046), (212, 96127), (388, 52523), (991, 20564), (1982, 10282), (3964, 5141)]