20258416

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{9109}}^1$

素因数の和:9256

約数の個数: 20

約数和(自身を含む): 39537400

約数和(自身を除く): 19278984

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 9109, 18218, 36436, 72872, 145744, 1266151, 2532302, 5064604, 10129208, 20258416]

約数ペア:

[(1, 20258416), (2, 10129208), (4, 5064604), (8, 2532302), (16, 1266151), (139, 145744), (278, 72872), (556, 36436), (1112, 18218), (2224, 9109)]