21167440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37799}}^1$

素因数の和:37819

約数の個数: 40

約数和(自身を含む): 56246400

約数和(自身を除く): 35078960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 37799, 75598, 151196, 188995, 264593, 302392, 377990, 529186, 604784, 755980, 1058372, 1322965, 1511960, 2116744, 2645930, 3023920, 4233488, 5291860, 10583720, 21167440]

約数ペア:

[(1, 21167440), (2, 10583720), (4, 5291860), (5, 4233488), (7, 3023920), (8, 2645930), (10, 2116744), (14, 1511960), (16, 1322965), (20, 1058372), (28, 755980), (35, 604784), (40, 529186), (56, 377990), (70, 302392), (80, 264593), (112, 188995), (140, 151196), (280, 75598), (560, 37799)]