20111247

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{269}}^1$

素因数の和:365

約数の個数: 40

約数和(自身を含む): 32931360

約数和(自身を除く): 12820113

約数列:

[1, 3, 9, 13, 27, 39, 71, 81, 117, 213, 269, 351, 639, 807, 923, 1053, 1917, 2421, 2769, 3497, 5751, 7263, 8307, 10491, 19099, 21789, 24921, 31473, 57297, 74763, 94419, 171891, 248287, 283257, 515673, 744861, 1547019, 2234583, 6703749, 20111247]

約数ペア:

[(1, 20111247), (3, 6703749), (9, 2234583), (13, 1547019), (27, 744861), (39, 515673), (71, 283257), (81, 248287), (117, 171891), (213, 94419), (269, 74763), (351, 57297), (639, 31473), (807, 24921), (923, 21789), (1053, 19099), (1917, 10491), (2421, 8307), (2769, 7263), (3497, 5751)]