21319336

素因数分解:

$2^3\times {\mathrm{1223}}^1\times {\mathrm{2179}}^1$

素因数の和:3408

約数の個数: 16

約数和(自身を含む): 40024800

約数和(自身を除く): 18705464

約数列:

[1, 2, 4, 8, 1223, 2179, 2446, 4358, 4892, 8716, 9784, 17432, 2664917, 5329834, 10659668, 21319336]

約数ペア:

[(1, 21319336), (2, 10659668), (4, 5329834), (8, 2664917), (1223, 17432), (2179, 9784), (2446, 8716), (4358, 4892)]