20626210

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:247

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 22919390

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 71, 95, 110, 139, 142, 190, 209, 278, 355, 418, 695, 710, 781, 1045, 1349, 1390, 1529, 1562, 2090, 2641, 2698, 3058, 3905, 5282, 6745, 7645, 7810, 9869, 13205, 13490, 14839, 15290, 19738, 26410, 29051, 29678, 49345, 58102, 74195, 98690, 108559, 145255, 148390, 187511, 217118, 290510, 375022, 542795, 937555, 1085590, 1875110, 2062621, 4125242, 10313105, 20626210]

約数ペア:

[(1, 20626210), (2, 10313105), (5, 4125242), (10, 2062621), (11, 1875110), (19, 1085590), (22, 937555), (38, 542795), (55, 375022), (71, 290510), (95, 217118), (110, 187511), (139, 148390), (142, 145255), (190, 108559), (209, 98690), (278, 74195), (355, 58102), (418, 49345), (695, 29678), (710, 29051), (781, 26410), (1045, 19738), (1349, 15290), (1390, 14839), (1529, 13490), (1562, 13205), (2090, 9869), (2641, 7810), (2698, 7645), (3058, 6745), (3905, 5282)]