19899904

素因数分解:

$2^9\times {\mathrm{38867}}^1$

素因数の和:38885

約数の個数: 20

約数和(自身を含む): 39761964

約数和(自身を除く): 19862060

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 38867, 77734, 155468, 310936, 621872, 1243744, 2487488, 4974976, 9949952, 19899904]

約数ペア:

[(1, 19899904), (2, 9949952), (4, 4974976), (8, 2487488), (16, 1243744), (32, 621872), (64, 310936), (128, 155468), (256, 77734), (512, 38867)]