78516520

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{24847}}^1$

素因数の和:24937

約数の個数: 32

約数和(自身を含む): 178905600

約数和(自身を除く): 100389080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 24847, 49694, 99388, 124235, 198776, 248470, 496940, 993880, 1962913, 3925826, 7851652, 9814565, 15703304, 19629130, 39258260, 78516520]

約数ペア:

[(1, 78516520), (2, 39258260), (4, 19629130), (5, 15703304), (8, 9814565), (10, 7851652), (20, 3925826), (40, 1962913), (79, 993880), (158, 496940), (316, 248470), (395, 198776), (632, 124235), (790, 99388), (1580, 49694), (3160, 24847)]