21115216

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{42571}}^1$

素因数の和:42610

約数の個数: 20

約数和(自身を含む): 42231424

約数和(自身を除く): 21116208

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 42571, 85142, 170284, 340568, 681136, 1319701, 2639402, 5278804, 10557608, 21115216]

約数ペア:

[(1, 21115216), (2, 10557608), (4, 5278804), (8, 2639402), (16, 1319701), (31, 681136), (62, 340568), (124, 170284), (248, 85142), (496, 42571)]