64490864

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{212141}}^1$

素因数の和:212168

約数の個数: 20

約数和(自身を含む): 131528040

約数和(自身を除く): 67037176

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 212141, 424282, 848564, 1697128, 3394256, 4030679, 8061358, 16122716, 32245432, 64490864]

約数ペア:

[(1, 64490864), (2, 32245432), (4, 16122716), (8, 8061358), (16, 4030679), (19, 3394256), (38, 1697128), (76, 848564), (152, 424282), (304, 212141)]