19639184

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{11261}}^1$

素因数の和:11378

約数の個数: 20

約数和(自身を含む): 38403420

約数和(自身を除く): 18764236

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 11261, 22522, 45044, 90088, 180176, 1227449, 2454898, 4909796, 9819592, 19639184]

約数ペア:

[(1, 19639184), (2, 9819592), (4, 4909796), (8, 2454898), (16, 1227449), (109, 180176), (218, 90088), (436, 45044), (872, 22522), (1744, 11261)]