20931723

素因数分解:

$3^3\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1$

素因数の和:320

約数の個数: 32

約数和(自身を含む): 32140800

約数和(自身を除く): 11209077

約数列:

[1, 3, 9, 27, 61, 71, 179, 183, 213, 537, 549, 639, 1611, 1647, 1917, 4331, 4833, 10919, 12709, 12993, 32757, 38127, 38979, 98271, 114381, 116937, 294813, 343143, 775249, 2325747, 6977241, 20931723]

約数ペア:

[(1, 20931723), (3, 6977241), (9, 2325747), (27, 775249), (61, 343143), (71, 294813), (179, 116937), (183, 114381), (213, 98271), (537, 38979), (549, 38127), (639, 32757), (1611, 12993), (1647, 12709), (1917, 10919), (4331, 4833)]