19723952

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{281}}^1$

素因数の和:437

約数の個数: 40

約数和(自身を含む): 39653712

約数和(自身を除く): 19929760

約数列:

[1, 2, 4, 8, 16, 41, 82, 107, 164, 214, 281, 328, 428, 562, 656, 856, 1124, 1712, 2248, 4387, 4496, 8774, 11521, 17548, 23042, 30067, 35096, 46084, 60134, 70192, 92168, 120268, 184336, 240536, 481072, 1232747, 2465494, 4930988, 9861976, 19723952]

約数ペア:

[(1, 19723952), (2, 9861976), (4, 4930988), (8, 2465494), (16, 1232747), (41, 481072), (82, 240536), (107, 184336), (164, 120268), (214, 92168), (281, 70192), (328, 60134), (428, 46084), (562, 35096), (656, 30067), (856, 23042), (1124, 17548), (1712, 11521), (2248, 8774), (4387, 4496)]