20671440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{86131}}^1$

素因数の和:86147

約数の個数: 40

約数和(自身を含む): 64082208

約数和(自身を除く): 43410768

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 86131, 172262, 258393, 344524, 430655, 516786, 689048, 861310, 1033572, 1291965, 1378096, 1722620, 2067144, 2583930, 3445240, 4134288, 5167860, 6890480, 10335720, 20671440]

約数ペア:

[(1, 20671440), (2, 10335720), (3, 6890480), (4, 5167860), (5, 4134288), (6, 3445240), (8, 2583930), (10, 2067144), (12, 1722620), (15, 1378096), (16, 1291965), (20, 1033572), (24, 861310), (30, 689048), (40, 516786), (48, 430655), (60, 344524), (80, 258393), (120, 172262), (240, 86131)]