21226689

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{1439}}^1$

素因数の和:1605

約数の個数: 24

約数和(自身を含む): 33696000

約数和(自身を除く): 12469311

約数列:

[1, 3, 9, 11, 33, 99, 149, 447, 1341, 1439, 1639, 4317, 4917, 12951, 14751, 15829, 47487, 142461, 214411, 643233, 1929699, 2358521, 7075563, 21226689]

約数ペア:

[(1, 21226689), (3, 7075563), (9, 2358521), (11, 1929699), (33, 643233), (99, 214411), (149, 142461), (447, 47487), (1341, 15829), (1439, 14751), (1639, 12951), (4317, 4917)]