21108728

素因数分解:

$2^3\times {\mathrm{571}}^1\times {\mathrm{4621}}^1$

素因数の和:5198

約数の個数: 16

約数和(自身を含む): 39656760

約数和(自身を除く): 18548032

約数列:

[1, 2, 4, 8, 571, 1142, 2284, 4568, 4621, 9242, 18484, 36968, 2638591, 5277182, 10554364, 21108728]

約数ペア:

[(1, 21108728), (2, 10554364), (4, 5277182), (8, 2638591), (571, 36968), (1142, 18484), (2284, 9242), (4568, 4621)]