78908780

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{9839}}^1$

素因数の和:10249

約数の個数: 24

約数和(自身を含む): 166138560

約数和(自身を除く): 87229780

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 4010, 8020, 9839, 19678, 39356, 49195, 98390, 196780, 3945439, 7890878, 15781756, 19727195, 39454390, 78908780]

約数ペア:

[(1, 78908780), (2, 39454390), (4, 19727195), (5, 15781756), (10, 7890878), (20, 3945439), (401, 196780), (802, 98390), (1604, 49195), (2005, 39356), (4010, 19678), (8020, 9839)]