20988180

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{38867}}^1$

素因数の和:38885

約数の個数: 48

約数和(自身を含む): 65298240

約数和(自身を除く): 44310060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 38867, 77734, 116601, 155468, 194335, 233202, 349803, 388670, 466404, 583005, 699606, 777340, 1049409, 1166010, 1399212, 1749015, 2098818, 2332020, 3498030, 4197636, 5247045, 6996060, 10494090, 20988180]

約数ペア:

[(1, 20988180), (2, 10494090), (3, 6996060), (4, 5247045), (5, 4197636), (6, 3498030), (9, 2332020), (10, 2098818), (12, 1749015), (15, 1399212), (18, 1166010), (20, 1049409), (27, 777340), (30, 699606), (36, 583005), (45, 466404), (54, 388670), (60, 349803), (90, 233202), (108, 194335), (135, 155468), (180, 116601), (270, 77734), (540, 38867)]