20900404

素因数分解:

$2^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{8387}}^1$

素因数の和:8487

約数の個数: 24

約数和(自身を含む): 42275520

約数和(自身を除く): 21375116

約数列:

[1, 2, 4, 7, 14, 28, 89, 178, 356, 623, 1246, 2492, 8387, 16774, 33548, 58709, 117418, 234836, 746443, 1492886, 2985772, 5225101, 10450202, 20900404]

約数ペア:

[(1, 20900404), (2, 10450202), (4, 5225101), (7, 2985772), (14, 1492886), (28, 746443), (89, 234836), (178, 117418), (356, 58709), (623, 33548), (1246, 16774), (2492, 8387)]