20280986

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{269}}^1$

素因数の和:454

約数の個数: 32

約数和(自身を含む): 34992000

約数和(自身を除く): 14711014

約数列:

[1, 2, 11, 22, 23, 46, 149, 253, 269, 298, 506, 538, 1639, 2959, 3278, 3427, 5918, 6187, 6854, 12374, 37697, 40081, 68057, 75394, 80162, 136114, 440891, 881782, 921863, 1843726, 10140493, 20280986]

約数ペア:

[(1, 20280986), (2, 10140493), (11, 1843726), (22, 921863), (23, 881782), (46, 440891), (149, 136114), (253, 80162), (269, 75394), (298, 68057), (506, 40081), (538, 37697), (1639, 12374), (2959, 6854), (3278, 6187), (3427, 5918)]