20033960

素因数分解:

$2^3\times 5^1\times {\mathrm{401}}^1\times {\mathrm{1249}}^1$

素因数の和:1661

約数の個数: 32

約数和(自身を含む): 45225000

約数和(自身を除く): 25191040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 401, 802, 1249, 1604, 2005, 2498, 3208, 4010, 4996, 6245, 8020, 9992, 12490, 16040, 24980, 49960, 500849, 1001698, 2003396, 2504245, 4006792, 5008490, 10016980, 20033960]

約数ペア:

[(1, 20033960), (2, 10016980), (4, 5008490), (5, 4006792), (8, 2504245), (10, 2003396), (20, 1001698), (40, 500849), (401, 49960), (802, 24980), (1249, 16040), (1604, 12490), (2005, 9992), (2498, 8020), (3208, 6245), (4010, 4996)]