20168408080

素因数分解:

$2^4\times 5^1\times {\mathrm{743}}^1\times {\mathrm{339307}}^1$

素因数の和:340063

約数の個数: 40

約数和(自身を含む): 46954798272

約数和(自身を除く): 26786390192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 743, 1486, 2972, 3715, 5944, 7430, 11888, 14860, 29720, 59440, 339307, 678614, 1357228, 1696535, 2714456, 3393070, 5428912, 6786140, 13572280, 27144560, 252105101, 504210202, 1008420404, 1260525505, 2016840808, 2521051010, 4033681616, 5042102020, 10084204040, 20168408080]

約数ペア:

[(1, 20168408080), (2, 10084204040), (4, 5042102020), (5, 4033681616), (8, 2521051010), (10, 2016840808), (16, 1260525505), (20, 1008420404), (40, 504210202), (80, 252105101), (743, 27144560), (1486, 13572280), (2972, 6786140), (3715, 5428912), (5944, 3393070), (7430, 2714456), (11888, 1696535), (14860, 1357228), (29720, 678614), (59440, 339307)]