20981668

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{4127}}^1$

素因数の和:4203

約数の個数: 24

約数和(自身を含む): 38836224

約数和(自身を除く): 17854556

約数列:

[1, 2, 4, 31, 41, 62, 82, 124, 164, 1271, 2542, 4127, 5084, 8254, 16508, 127937, 169207, 255874, 338414, 511748, 676828, 5245417, 10490834, 20981668]

約数ペア:

[(1, 20981668), (2, 10490834), (4, 5245417), (31, 676828), (41, 511748), (62, 338414), (82, 255874), (124, 169207), (164, 127937), (1271, 16508), (2542, 8254), (4127, 5084)]