81023920

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{9833}}^1$

素因数の和:9949

約数の個数: 40

約数和(自身を含む): 190228896

約数和(自身を除く): 109204976

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 206, 412, 515, 824, 1030, 1648, 2060, 4120, 8240, 9833, 19666, 39332, 49165, 78664, 98330, 157328, 196660, 393320, 786640, 1012799, 2025598, 4051196, 5063995, 8102392, 10127990, 16204784, 20255980, 40511960, 81023920]

約数ペア:

[(1, 81023920), (2, 40511960), (4, 20255980), (5, 16204784), (8, 10127990), (10, 8102392), (16, 5063995), (20, 4051196), (40, 2025598), (80, 1012799), (103, 786640), (206, 393320), (412, 196660), (515, 157328), (824, 98330), (1030, 78664), (1648, 49165), (2060, 39332), (4120, 19666), (8240, 9833)]