20512667791

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1747}}^1\times {\mathrm{4919}}^1$

素因数の和:6715

約数の個数: 32

約数和(自身を含む): 26419691520

約数和(自身を除く): 5907023729

約数列:

[1, 7, 11, 31, 77, 217, 341, 1747, 2387, 4919, 12229, 19217, 34433, 54109, 54157, 134519, 152489, 378763, 379099, 595727, 1067423, 1677379, 4170089, 8593493, 11741653, 60154451, 94528423, 266398283, 661698961, 1864787981, 2930381113, 20512667791]

約数ペア:

[(1, 20512667791), (7, 2930381113), (11, 1864787981), (31, 661698961), (77, 266398283), (217, 94528423), (341, 60154451), (1747, 11741653), (2387, 8593493), (4919, 4170089), (12229, 1677379), (19217, 1067423), (34433, 595727), (54109, 379099), (54157, 378763), (134519, 152489)]