81506975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{7229}}^1$

素因数の和:7291

約数の個数: 24

約数和(自身を含む): 112961520

約数和(自身を除く): 31454545

約数列:

[1, 5, 11, 25, 41, 55, 205, 275, 451, 1025, 2255, 7229, 11275, 36145, 79519, 180725, 296389, 397595, 1481945, 1987975, 3260279, 7409725, 16301395, 81506975]

約数ペア:

[(1, 81506975), (5, 16301395), (11, 7409725), (25, 3260279), (41, 1987975), (55, 1481945), (205, 397595), (275, 296389), (451, 180725), (1025, 79519), (2255, 36145), (7229, 11275)]