20505990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{479}}^1\times {\mathrm{1427}}^1$

素因数の和:1916

約数の個数: 32

約数和(自身を含む): 49351680

約数和(自身を除く): 28845690

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 479, 958, 1427, 1437, 2395, 2854, 2874, 4281, 4790, 7135, 7185, 8562, 14270, 14370, 21405, 42810, 683533, 1367066, 2050599, 3417665, 4101198, 6835330, 10252995, 20505990]

約数ペア:

[(1, 20505990), (2, 10252995), (3, 6835330), (5, 4101198), (6, 3417665), (10, 2050599), (15, 1367066), (30, 683533), (479, 42810), (958, 21405), (1427, 14370), (1437, 14270), (2395, 8562), (2854, 7185), (2874, 7135), (4281, 4790)]