2019011920

素因数分解:

$2^4\times 5^1\times {\mathrm{2549}}^1\times {\mathrm{9901}}^1$

素因数の和:12463

約数の個数: 40

約数和(自身を含む): 4696518600

約数和(自身を除く): 2677506680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2549, 5098, 9901, 10196, 12745, 19802, 20392, 25490, 39604, 40784, 49505, 50980, 79208, 99010, 101960, 158416, 198020, 203920, 396040, 792080, 25237649, 50475298, 100950596, 126188245, 201901192, 252376490, 403802384, 504752980, 1009505960, 2019011920]

約数ペア:

[(1, 2019011920), (2, 1009505960), (4, 504752980), (5, 403802384), (8, 252376490), (10, 201901192), (16, 126188245), (20, 100950596), (40, 50475298), (80, 25237649), (2549, 792080), (5098, 396040), (9901, 203920), (10196, 198020), (12745, 158416), (19802, 101960), (20392, 99010), (25490, 79208), (39604, 50980), (40784, 49505)]