77772880

素因数分解:

$2^4\times 5^1\times {\mathrm{972161}}^1$

素因数の和:972174

約数の個数: 20

約数和(自身を含む): 180822132

約数和(自身を除く): 103049252

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 972161, 1944322, 3888644, 4860805, 7777288, 9721610, 15554576, 19443220, 38886440, 77772880]

約数ペア:

[(1, 77772880), (2, 38886440), (4, 19443220), (5, 15554576), (8, 9721610), (10, 7777288), (16, 4860805), (20, 3888644), (40, 1944322), (80, 972161)]