19808512

素因数分解:

$2^8\times {\mathrm{77377}}^1$

素因数の和:77393

約数の個数: 18

約数和(自身を含む): 39540158

約数和(自身を除く): 19731646

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 77377, 154754, 309508, 619016, 1238032, 2476064, 4952128, 9904256, 19808512]

約数ペア:

[(1, 19808512), (2, 9904256), (4, 4952128), (8, 2476064), (16, 1238032), (32, 619016), (64, 309508), (128, 154754), (256, 77377)]