19894528

素因数分解:

$2^8\times {\mathrm{77713}}^1$

素因数の和:77729

約数の個数: 18

約数和(自身を含む): 39711854

約数和(自身を除く): 19817326

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 77713, 155426, 310852, 621704, 1243408, 2486816, 4973632, 9947264, 19894528]

約数ペア:

[(1, 19894528), (2, 9947264), (4, 4973632), (8, 2486816), (16, 1243408), (32, 621704), (64, 310852), (128, 155426), (256, 77713)]