215537680

素因数分解:

$2^4\times 5^1\times {\mathrm{2694221}}^1$

素因数の和:2694234

約数の個数: 20

約数和(自身を含む): 501125292

約数和(自身を除く): 285587612

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2694221, 5388442, 10776884, 13471105, 21553768, 26942210, 43107536, 53884420, 107768840, 215537680]

約数ペア:

[(1, 215537680), (2, 107768840), (4, 53884420), (5, 43107536), (8, 26942210), (10, 21553768), (16, 13471105), (20, 10776884), (40, 5388442), (80, 2694221)]