78401080

素因数分解:

$2^3\times 5^1\times {\mathrm{907}}^1\times {\mathrm{2161}}^1$

素因数の和:3079

約数の個数: 32

約数和(自身を含む): 176678640

約数和(自身を除く): 98277560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 907, 1814, 2161, 3628, 4322, 4535, 7256, 8644, 9070, 10805, 17288, 18140, 21610, 36280, 43220, 86440, 1960027, 3920054, 7840108, 9800135, 15680216, 19600270, 39200540, 78401080]

約数ペア:

[(1, 78401080), (2, 39200540), (4, 19600270), (5, 15680216), (8, 9800135), (10, 7840108), (20, 3920054), (40, 1960027), (907, 86440), (1814, 43220), (2161, 36280), (3628, 21610), (4322, 18140), (4535, 17288), (7256, 10805), (8644, 9070)]