21053660

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{24481}}^1$

素因数の和:24533

約数の個数: 24

約数和(自身を含む): 45242736

約数和(自身を除く): 24189076

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 24481, 48962, 97924, 122405, 244810, 489620, 1052683, 2105366, 4210732, 5263415, 10526830, 21053660]

約数ペア:

[(1, 21053660), (2, 10526830), (4, 5263415), (5, 4210732), (10, 2105366), (20, 1052683), (43, 489620), (86, 244810), (172, 122405), (215, 97924), (430, 48962), (860, 24481)]