21621040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{38609}}^1$

素因数の和:38629

約数の個数: 40

約数和(自身を含む): 57451680

約数和(自身を除く): 35830640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 38609, 77218, 154436, 193045, 270263, 308872, 386090, 540526, 617744, 772180, 1081052, 1351315, 1544360, 2162104, 2702630, 3088720, 4324208, 5405260, 10810520, 21621040]

約数ペア:

[(1, 21621040), (2, 10810520), (4, 5405260), (5, 4324208), (7, 3088720), (8, 2702630), (10, 2162104), (14, 1544360), (16, 1351315), (20, 1081052), (28, 772180), (35, 617744), (40, 540526), (56, 386090), (70, 308872), (80, 270263), (112, 193045), (140, 154436), (280, 77218), (560, 38609)]