21081296

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{9479}}^1$

素因数の和:9626

約数の個数: 20

約数和(自身を含む): 41143200

約数和(自身を除く): 20061904

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 9479, 18958, 37916, 75832, 151664, 1317581, 2635162, 5270324, 10540648, 21081296]

約数ペア:

[(1, 21081296), (2, 10540648), (4, 5270324), (8, 2635162), (16, 1317581), (139, 151664), (278, 75832), (556, 37916), (1112, 18958), (2224, 9479)]