778865380

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{401477}}^1$

素因数の和:401583

約数の個数: 24

約数和(自身を含む): 1652483448

約数和(自身を除く): 873618068

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 401477, 802954, 1605908, 2007385, 4014770, 8029540, 38943269, 77886538, 155773076, 194716345, 389432690, 778865380]

約数ペア:

[(1, 778865380), (2, 389432690), (4, 194716345), (5, 155773076), (10, 77886538), (20, 38943269), (97, 8029540), (194, 4014770), (388, 2007385), (485, 1605908), (970, 802954), (1940, 401477)]