209408

素因数分解:

$2^9\times {\mathrm{409}}^1$

素因数の和:427

約数の個数: 20

約数和(自身を含む): 419430

約数和(自身を除く): 210022

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 409, 512, 818, 1636, 3272, 6544, 13088, 26176, 52352, 104704, 209408]

約数ペア:

[(1, 209408), (2, 104704), (4, 52352), (8, 26176), (16, 13088), (32, 6544), (64, 3272), (128, 1636), (256, 818), (409, 512)]