21521248317

素因数分解:

$3^3\times {\mathrm{53}}^1\times {\mathrm{947}}^1\times {\mathrm{15881}}^1$

素因数の和:16890

約数の個数: 32

約数和(自身を含む): 32521253760

約数和(自身を除く): 11000005443

約数列:

[1, 3, 9, 27, 53, 159, 477, 947, 1431, 2841, 8523, 15881, 25569, 47643, 50191, 142929, 150573, 428787, 451719, 841693, 1355157, 2525079, 7575237, 15039307, 22725711, 45117921, 135353763, 406061289, 797083271, 2391249813, 7173749439, 21521248317]

約数ペア:

[(1, 21521248317), (3, 7173749439), (9, 2391249813), (27, 797083271), (53, 406061289), (159, 135353763), (477, 45117921), (947, 22725711), (1431, 15039307), (2841, 7575237), (8523, 2525079), (15881, 1355157), (25569, 841693), (47643, 451719), (50191, 428787), (142929, 150573)]