21404583

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:180

約数の個数: 48

約数和(自身を含む): 34594560

約数和(自身を除く): 13189977

約数列:

[1, 3, 9, 19, 41, 43, 57, 71, 123, 129, 171, 213, 369, 387, 639, 779, 817, 1349, 1763, 2337, 2451, 2911, 3053, 4047, 5289, 7011, 7353, 8733, 9159, 12141, 15867, 26199, 27477, 33497, 55309, 58007, 100491, 125173, 165927, 174021, 301473, 375519, 497781, 522063, 1126557, 2378287, 7134861, 21404583]

約数ペア:

[(1, 21404583), (3, 7134861), (9, 2378287), (19, 1126557), (41, 522063), (43, 497781), (57, 375519), (71, 301473), (123, 174021), (129, 165927), (171, 125173), (213, 100491), (369, 58007), (387, 55309), (639, 33497), (779, 27477), (817, 26199), (1349, 15867), (1763, 12141), (2337, 9159), (2451, 8733), (2911, 7353), (3053, 7011), (4047, 5289)]