201991808

素因数分解:

$2^7\times {\mathrm{1578061}}^1$

素因数の和:1578075

約数の個数: 16

約数和(自身を含む): 402405810

約数和(自身を除く): 200414002

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 1578061, 3156122, 6312244, 12624488, 25248976, 50497952, 100995904, 201991808]

約数ペア:

[(1, 201991808), (2, 100995904), (4, 50497952), (8, 25248976), (16, 12624488), (32, 6312244), (64, 3156122), (128, 1578061)]