21000213

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{751}}^1$

素因数の和:1009

約数の個数: 24

約数和(自身を含む): 32847360

約数和(自身を除く): 11847147

約数列:

[1, 3, 9, 13, 39, 117, 239, 717, 751, 2151, 2253, 3107, 6759, 9321, 9763, 27963, 29289, 87867, 179489, 538467, 1615401, 2333357, 7000071, 21000213]

約数ペア:

[(1, 21000213), (3, 7000071), (9, 2333357), (13, 1615401), (39, 538467), (117, 179489), (239, 87867), (717, 29289), (751, 27963), (2151, 9763), (2253, 9321), (3107, 6759)]