28887640

素因数分解:

$2^3\times 5^1\times {\mathrm{337}}^1\times {\mathrm{2143}}^1$

素因数の和:2491

約数の個数: 32

約数和(自身を含む): 65220480

約数和(自身を除く): 36332840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 337, 674, 1348, 1685, 2143, 2696, 3370, 4286, 6740, 8572, 10715, 13480, 17144, 21430, 42860, 85720, 722191, 1444382, 2888764, 3610955, 5777528, 7221910, 14443820, 28887640]

約数ペア:

[(1, 28887640), (2, 14443820), (4, 7221910), (5, 5777528), (8, 3610955), (10, 2888764), (20, 1444382), (40, 722191), (337, 85720), (674, 42860), (1348, 21430), (1685, 17144), (2143, 13480), (2696, 10715), (3370, 8572), (4286, 6740)]