21258904

素因数分解:

$2^3\times {\mathrm{523}}^1\times {\mathrm{5081}}^1$

素因数の和:5610

約数の個数: 16

約数和(自身を含む): 39944520

約数和(自身を除く): 18685616

約数列:

[1, 2, 4, 8, 523, 1046, 2092, 4184, 5081, 10162, 20324, 40648, 2657363, 5314726, 10629452, 21258904]

約数ペア:

[(1, 21258904), (2, 10629452), (4, 5314726), (8, 2657363), (523, 40648), (1046, 20324), (2092, 10162), (4184, 5081)]