78801940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{562871}}^1$

素因数の和:562887

約数の個数: 24

約数和(自身を含む): 189124992

約数和(自身を除く): 110323052

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 562871, 1125742, 2251484, 2814355, 3940097, 5628710, 7880194, 11257420, 15760388, 19700485, 39400970, 78801940]

約数ペア:

[(1, 78801940), (2, 39400970), (4, 19700485), (5, 15760388), (7, 11257420), (10, 7880194), (14, 5628710), (20, 3940097), (28, 2814355), (35, 2251484), (70, 1125742), (140, 562871)]