20513290

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{2237}}^1$

素因数の和:2382

約数の個数: 32

約数和(自身を含む): 42539904

約数和(自身を除く): 22026614

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 131, 262, 655, 917, 1310, 1834, 2237, 4474, 4585, 9170, 11185, 15659, 22370, 31318, 78295, 156590, 293047, 586094, 1465235, 2051329, 2930470, 4102658, 10256645, 20513290]

約数ペア:

[(1, 20513290), (2, 10256645), (5, 4102658), (7, 2930470), (10, 2051329), (14, 1465235), (35, 586094), (70, 293047), (131, 156590), (262, 78295), (655, 31318), (917, 22370), (1310, 15659), (1834, 11185), (2237, 9170), (4474, 4585)]