20620990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{1249}}^1$

素因数の和:1396

約数の個数: 32

約数和(自身を含む): 40320000

約数和(自身を除く): 19699010

約数列:

[1, 2, 5, 10, 13, 26, 65, 127, 130, 254, 635, 1249, 1270, 1651, 2498, 3302, 6245, 8255, 12490, 16237, 16510, 32474, 81185, 158623, 162370, 317246, 793115, 1586230, 2062099, 4124198, 10310495, 20620990]

約数ペア:

[(1, 20620990), (2, 10310495), (5, 4124198), (10, 2062099), (13, 1586230), (26, 793115), (65, 317246), (127, 162370), (130, 158623), (254, 81185), (635, 32474), (1249, 16510), (1270, 16237), (1651, 12490), (2498, 8255), (3302, 6245)]