21554552

素因数分解:

$2^3\times {\mathrm{401}}^1\times {\mathrm{6719}}^1$

素因数の和:7126

約数の個数: 16

約数和(自身を含む): 40521600

約数和(自身を除く): 18967048

約数列:

[1, 2, 4, 8, 401, 802, 1604, 3208, 6719, 13438, 26876, 53752, 2694319, 5388638, 10777276, 21554552]

約数ペア:

[(1, 21554552), (2, 10777276), (4, 5388638), (8, 2694319), (401, 53752), (802, 26876), (1604, 13438), (3208, 6719)]