20333264

素因数分解:

$2^4\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2557}}^1$

素因数の和:2643

約数の個数: 40

約数和(自身を含む): 45675648

約数和(自身を除く): 25342384

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 71, 112, 142, 284, 497, 568, 994, 1136, 1988, 2557, 3976, 5114, 7952, 10228, 17899, 20456, 35798, 40912, 71596, 143192, 181547, 286384, 363094, 726188, 1270829, 1452376, 2541658, 2904752, 5083316, 10166632, 20333264]

約数ペア:

[(1, 20333264), (2, 10166632), (4, 5083316), (7, 2904752), (8, 2541658), (14, 1452376), (16, 1270829), (28, 726188), (56, 363094), (71, 286384), (112, 181547), (142, 143192), (284, 71596), (497, 40912), (568, 35798), (994, 20456), (1136, 17899), (1988, 10228), (2557, 7952), (3976, 5114)]