19817984

素因数分解:

$2^9\times {\mathrm{38707}}^1$

素因数の和:38725

約数の個数: 20

約数和(自身を含む): 39598284

約数和(自身を除く): 19780300

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 38707, 77414, 154828, 309656, 619312, 1238624, 2477248, 4954496, 9908992, 19817984]

約数ペア:

[(1, 19817984), (2, 9908992), (4, 4954496), (8, 2477248), (16, 1238624), (32, 619312), (64, 309656), (128, 154828), (256, 77414), (512, 38707)]