18189540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{727}}^1$

素因数の和:881

約数の個数: 72

約数和(自身を含む): 55648320

約数和(自身を除く): 37458780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 139, 180, 278, 417, 556, 695, 727, 834, 1251, 1390, 1454, 1668, 2085, 2181, 2502, 2780, 2908, 3635, 4170, 4362, 5004, 6255, 6543, 7270, 8340, 8724, 10905, 12510, 13086, 14540, 21810, 25020, 26172, 32715, 43620, 65430, 101053, 130860, 202106, 303159, 404212, 505265, 606318, 909477, 1010530, 1212636, 1515795, 1818954, 2021060, 3031590, 3637908, 4547385, 6063180, 9094770, 18189540]

約数ペア:

[(1, 18189540), (2, 9094770), (3, 6063180), (4, 4547385), (5, 3637908), (6, 3031590), (9, 2021060), (10, 1818954), (12, 1515795), (15, 1212636), (18, 1010530), (20, 909477), (30, 606318), (36, 505265), (45, 404212), (60, 303159), (90, 202106), (139, 130860), (180, 101053), (278, 65430), (417, 43620), (556, 32715), (695, 26172), (727, 25020), (834, 21810), (1251, 14540), (1390, 13086), (1454, 12510), (1668, 10905), (2085, 8724), (2181, 8340), (2502, 7270), (2780, 6543), (2908, 6255), (3635, 5004), (4170, 4362)]