7428421

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{181}}^1$

素因数の和:253

約数の個数: 32

約数和(自身を含む): 10273536

約数和(自身を除く): 2845115

約数列:

[1, 7, 11, 13, 41, 77, 91, 143, 181, 287, 451, 533, 1001, 1267, 1991, 2353, 3157, 3731, 5863, 7421, 13937, 16471, 25883, 41041, 51947, 81631, 96473, 181181, 571417, 675311, 1061203, 7428421]

約数ペア:

[(1, 7428421), (7, 1061203), (11, 675311), (13, 571417), (41, 181181), (77, 96473), (91, 81631), (143, 51947), (181, 41041), (287, 25883), (451, 16471), (533, 13937), (1001, 7421), (1267, 5863), (1991, 3731), (2353, 3157)]