21387450

素因数分解:

$2^1\times 3^1\times 5^2\times 7^1\times {\mathrm{20369}}^1$

素因数の和:20391

約数の個数: 48

約数和(自身を含む): 60621120

約数和(自身を除く): 39233670

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 25, 30, 35, 42, 50, 70, 75, 105, 150, 175, 210, 350, 525, 1050, 20369, 40738, 61107, 101845, 122214, 142583, 203690, 285166, 305535, 427749, 509225, 611070, 712915, 855498, 1018450, 1425830, 1527675, 2138745, 3055350, 3564575, 4277490, 7129150, 10693725, 21387450]

約数ペア:

[(1, 21387450), (2, 10693725), (3, 7129150), (5, 4277490), (6, 3564575), (7, 3055350), (10, 2138745), (14, 1527675), (15, 1425830), (21, 1018450), (25, 855498), (30, 712915), (35, 611070), (42, 509225), (50, 427749), (70, 305535), (75, 285166), (105, 203690), (150, 142583), (175, 122214), (210, 101845), (350, 61107), (525, 40738), (1050, 20369)]