19980351

素因数分解:

$3^4\times {\mathrm{97}}^1\times {\mathrm{2543}}^1$

素因数の和:2652

約数の個数: 20

約数和(自身を含む): 30166752

約数和(自身を除く): 10186401

約数列:

[1, 3, 9, 27, 81, 97, 291, 873, 2543, 2619, 7629, 7857, 22887, 68661, 205983, 246671, 740013, 2220039, 6660117, 19980351]

約数ペア:

[(1, 19980351), (3, 6660117), (9, 2220039), (27, 740013), (81, 246671), (97, 205983), (291, 68661), (873, 22887), (2543, 7857), (2619, 7629)]