20402284

素因数分解:

$2^2\times 7^1\times {\mathrm{251}}^1\times {\mathrm{2903}}^1$

素因数の和:3165

約数の個数: 24

約数和(自身を含む): 40981248

約数和(自身を除く): 20578964

約数列:

[1, 2, 4, 7, 14, 28, 251, 502, 1004, 1757, 2903, 3514, 5806, 7028, 11612, 20321, 40642, 81284, 728653, 1457306, 2914612, 5100571, 10201142, 20402284]

約数ペア:

[(1, 20402284), (2, 10201142), (4, 5100571), (7, 2914612), (14, 1457306), (28, 728653), (251, 81284), (502, 40642), (1004, 20321), (1757, 11612), (2903, 7028), (3514, 5806)]