1981419760

素因数分解:

$2^4\times 5^1\times {\mathrm{24767747}}^1$

素因数の和:24767760

約数の個数: 20

約数和(自身を含む): 4606801128

約数和(自身を除く): 2625381368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 24767747, 49535494, 99070988, 123838735, 198141976, 247677470, 396283952, 495354940, 990709880, 1981419760]

約数ペア:

[(1, 1981419760), (2, 990709880), (4, 495354940), (5, 396283952), (8, 247677470), (10, 198141976), (16, 123838735), (20, 99070988), (40, 49535494), (80, 24767747)]