19781040

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{82421}}^1$

素因数の和:82437

約数の個数: 40

約数和(自身を含む): 61321968

約数和(自身を除く): 41540928

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 82421, 164842, 247263, 329684, 412105, 494526, 659368, 824210, 989052, 1236315, 1318736, 1648420, 1978104, 2472630, 3296840, 3956208, 4945260, 6593680, 9890520, 19781040]

約数ペア:

[(1, 19781040), (2, 9890520), (3, 6593680), (4, 4945260), (5, 3956208), (6, 3296840), (8, 2472630), (10, 1978104), (12, 1648420), (15, 1318736), (16, 1236315), (20, 989052), (24, 824210), (30, 659368), (40, 494526), (48, 412105), (60, 329684), (80, 247263), (120, 164842), (240, 82421)]