21096586

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{293}}^1$

素因数の和:478

約数の個数: 32

約数和(自身を含む): 37537920

約数和(自身を除く): 16441334

約数列:

[1, 2, 7, 14, 37, 74, 139, 259, 278, 293, 518, 586, 973, 1946, 2051, 4102, 5143, 10286, 10841, 21682, 36001, 40727, 72002, 75887, 81454, 151774, 285089, 570178, 1506899, 3013798, 10548293, 21096586]

約数ペア:

[(1, 21096586), (2, 10548293), (7, 3013798), (14, 1506899), (37, 570178), (74, 285089), (139, 151774), (259, 81454), (278, 75887), (293, 72002), (518, 40727), (586, 36001), (973, 21682), (1946, 10841), (2051, 10286), (4102, 5143)]