20910461

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:197

約数の個数: 32

約数和(自身を含む): 26127360

約数和(自身を除く): 5216899

約数列:

[1, 11, 13, 31, 53, 89, 143, 341, 403, 583, 689, 979, 1157, 1643, 2759, 4433, 4717, 7579, 12727, 18073, 21359, 30349, 35867, 51887, 61321, 146227, 234949, 394537, 674531, 1608497, 1900951, 20910461]

約数ペア:

[(1, 20910461), (11, 1900951), (13, 1608497), (31, 674531), (53, 394537), (89, 234949), (143, 146227), (341, 61321), (403, 51887), (583, 35867), (689, 30349), (979, 21359), (1157, 18073), (1643, 12727), (2759, 7579), (4433, 4717)]