19906016

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{439}}^1$

素因数の和:571

約数の個数: 48

約数和(自身を含む): 42688800

約数和(自身を除く): 22782784

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 109, 208, 218, 416, 436, 439, 872, 878, 1417, 1744, 1756, 2834, 3488, 3512, 5668, 5707, 7024, 11336, 11414, 14048, 22672, 22828, 45344, 45656, 47851, 91312, 95702, 182624, 191404, 382808, 622063, 765616, 1244126, 1531232, 2488252, 4976504, 9953008, 19906016]

約数ペア:

[(1, 19906016), (2, 9953008), (4, 4976504), (8, 2488252), (13, 1531232), (16, 1244126), (26, 765616), (32, 622063), (52, 382808), (104, 191404), (109, 182624), (208, 95702), (218, 91312), (416, 47851), (436, 45656), (439, 45344), (872, 22828), (878, 22672), (1417, 14048), (1744, 11414), (1756, 11336), (2834, 7024), (3488, 5707), (3512, 5668)]