20516560

素因数分解:

$2^4\times 5^1\times {\mathrm{337}}^1\times {\mathrm{761}}^1$

素因数の和:1111

約数の個数: 40

約数和(自身を含む): 47905416

約数和(自身を除く): 27388856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 337, 674, 761, 1348, 1522, 1685, 2696, 3044, 3370, 3805, 5392, 6088, 6740, 7610, 12176, 13480, 15220, 26960, 30440, 60880, 256457, 512914, 1025828, 1282285, 2051656, 2564570, 4103312, 5129140, 10258280, 20516560]

約数ペア:

[(1, 20516560), (2, 10258280), (4, 5129140), (5, 4103312), (8, 2564570), (10, 2051656), (16, 1282285), (20, 1025828), (40, 512914), (80, 256457), (337, 60880), (674, 30440), (761, 26960), (1348, 15220), (1522, 13480), (1685, 12176), (2696, 7610), (3044, 6740), (3370, 6088), (3805, 5392)]