21726328

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{208907}}^1$

素因数の和:208926

約数の個数: 16

約数和(自身を含む): 43870680

約数和(自身を除く): 22144352

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 208907, 417814, 835628, 1671256, 2715791, 5431582, 10863164, 21726328]

約数ペア:

[(1, 21726328), (2, 10863164), (4, 5431582), (8, 2715791), (13, 1671256), (26, 835628), (52, 417814), (104, 208907)]