81330900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{38729}}^1$

素因数の和:38753

約数の個数: 72

約数和(自身を含む): 268941120

約数和(自身を除く): 187610220

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100, 38729, 77458, 116187, 154916, 193645, 232374, 271103, 387290, 464748, 542206, 580935, 774580, 813309, 968225, 1084412, 1161870, 1355515, 1626618, 1936450, 2323740, 2711030, 2904675, 3253236, 3872900, 4066545, 5422060, 5809350, 6777575, 8133090, 11618700, 13555150, 16266180, 20332725, 27110300, 40665450, 81330900]

約数ペア:

[(1, 81330900), (2, 40665450), (3, 27110300), (4, 20332725), (5, 16266180), (6, 13555150), (7, 11618700), (10, 8133090), (12, 6777575), (14, 5809350), (15, 5422060), (20, 4066545), (21, 3872900), (25, 3253236), (28, 2904675), (30, 2711030), (35, 2323740), (42, 1936450), (50, 1626618), (60, 1355515), (70, 1161870), (75, 1084412), (84, 968225), (100, 813309), (105, 774580), (140, 580935), (150, 542206), (175, 464748), (210, 387290), (300, 271103), (350, 232374), (420, 193645), (525, 154916), (700, 116187), (1050, 77458), (2100, 38729)]