20249271

素因数分解:

$3^4\times 7^1\times {\mathrm{71}}^1\times {\mathrm{503}}^1$

素因数の和:593

約数の個数: 40

約数和(自身を含む): 35126784

約数和(自身を除く): 14877513

約数列:

[1, 3, 7, 9, 21, 27, 63, 71, 81, 189, 213, 497, 503, 567, 639, 1491, 1509, 1917, 3521, 4473, 4527, 5751, 10563, 13419, 13581, 31689, 35713, 40257, 40743, 95067, 107139, 249991, 285201, 321417, 749973, 964251, 2249919, 2892753, 6749757, 20249271]

約数ペア:

[(1, 20249271), (3, 6749757), (7, 2892753), (9, 2249919), (21, 964251), (27, 749973), (63, 321417), (71, 285201), (81, 249991), (189, 107139), (213, 95067), (497, 40743), (503, 40257), (567, 35713), (639, 31689), (1491, 13581), (1509, 13419), (1917, 10563), (3521, 5751), (4473, 4527)]