1680455537680

素因数分解:

$2^4\times 5^1\times {\mathrm{21005694221}}^1$

素因数の和:21005694234

約数の個数: 20

約数和(自身を含む): 3907059125292

約数和(自身を除く): 2226603587612

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 21005694221, 42011388442, 84022776884, 105028471105, 168045553768, 210056942210, 336091107536, 420113884420, 840227768840, 1680455537680]

約数ペア:

[(1, 1680455537680), (2, 840227768840), (4, 420113884420), (5, 336091107536), (8, 210056942210), (10, 168045553768), (16, 105028471105), (20, 84022776884), (40, 42011388442), (80, 21005694221)]