18749978

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{541}}^1$

素因数の和:630

約数の個数: 32

約数和(自身を含む): 32051712

約数和(自身を除く): 13301734

約数列:

[1, 2, 13, 26, 31, 43, 62, 86, 403, 541, 559, 806, 1082, 1118, 1333, 2666, 7033, 14066, 16771, 17329, 23263, 33542, 34658, 46526, 218023, 302419, 436046, 604838, 721153, 1442306, 9374989, 18749978]

約数ペア:

[(1, 18749978), (2, 9374989), (13, 1442306), (26, 721153), (31, 604838), (43, 436046), (62, 302419), (86, 218023), (403, 46526), (541, 34658), (559, 33542), (806, 23263), (1082, 17329), (1118, 16771), (1333, 14066), (2666, 7033)]