19722896

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{263}}^1$

素因数の和:423

約数の個数: 40

約数和(自身を含む): 39610560

約数和(自身を除く): 19887664

約数列:

[1, 2, 4, 8, 16, 43, 86, 109, 172, 218, 263, 344, 436, 526, 688, 872, 1052, 1744, 2104, 4208, 4687, 9374, 11309, 18748, 22618, 28667, 37496, 45236, 57334, 74992, 90472, 114668, 180944, 229336, 458672, 1232681, 2465362, 4930724, 9861448, 19722896]

約数ペア:

[(1, 19722896), (2, 9861448), (4, 4930724), (8, 2465362), (16, 1232681), (43, 458672), (86, 229336), (109, 180944), (172, 114668), (218, 90472), (263, 74992), (344, 57334), (436, 45236), (526, 37496), (688, 28667), (872, 22618), (1052, 18748), (1744, 11309), (2104, 9374), (4208, 4687)]