21761648

素因数分解:

$2^4\times {\mathrm{1360103}}^1$

素因数の和:1360111

約数の個数: 10

約数和(自身を含む): 42163224

約数和(自身を除く): 20401576

約数列:

[1, 2, 4, 8, 16, 1360103, 2720206, 5440412, 10880824, 21761648]

約数ペア:

[(1, 21761648), (2, 10880824), (4, 5440412), (8, 2720206), (16, 1360103)]