81521408

素因数分解:

$2^8\times {\mathrm{318443}}^1$

素因数の和:318459

約数の個数: 18

約数和(自身を含む): 162724884

約数和(自身を除く): 81203476

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 318443, 636886, 1273772, 2547544, 5095088, 10190176, 20380352, 40760704, 81521408]

約数ペア:

[(1, 81521408), (2, 40760704), (4, 20380352), (8, 10190176), (16, 5095088), (32, 2547544), (64, 1273772), (128, 636886), (256, 318443)]