19902208

素因数分解:

$2^8\times {\mathrm{77743}}^1$

素因数の和:77759

約数の個数: 18

約数和(自身を含む): 39727184

約数和(自身を除く): 19824976

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 77743, 155486, 310972, 621944, 1243888, 2487776, 4975552, 9951104, 19902208]

約数ペア:

[(1, 19902208), (2, 9951104), (4, 4975552), (8, 2487776), (16, 1243888), (32, 621944), (64, 310972), (128, 155486), (256, 77743)]