19791380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{373}}^1\times {\mathrm{379}}^1$

素因数の和:768

約数の個数: 48

約数和(自身を含む): 47752320

約数和(自身を除く): 27960940

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 373, 379, 746, 758, 1492, 1516, 1865, 1895, 2611, 2653, 3730, 3790, 5222, 5306, 7460, 7580, 10444, 10612, 13055, 13265, 26110, 26530, 52220, 53060, 141367, 282734, 565468, 706835, 989569, 1413670, 1979138, 2827340, 3958276, 4947845, 9895690, 19791380]

約数ペア:

[(1, 19791380), (2, 9895690), (4, 4947845), (5, 3958276), (7, 2827340), (10, 1979138), (14, 1413670), (20, 989569), (28, 706835), (35, 565468), (70, 282734), (140, 141367), (373, 53060), (379, 52220), (746, 26530), (758, 26110), (1492, 13265), (1516, 13055), (1865, 10612), (1895, 10444), (2611, 7580), (2653, 7460), (3730, 5306), (3790, 5222)]