19678864

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{28603}}^1$

素因数の和:28654

約数の個数: 20

約数和(自身を含む): 39015856

約数和(自身を除く): 19336992

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 28603, 57206, 114412, 228824, 457648, 1229929, 2459858, 4919716, 9839432, 19678864]

約数ペア:

[(1, 19678864), (2, 9839432), (4, 4919716), (8, 2459858), (16, 1229929), (43, 457648), (86, 228824), (172, 114412), (344, 57206), (688, 28603)]