21327397

素因数分解:

$7^3\times {\mathrm{13}}^1\times {\mathrm{4783}}^1$

素因数の和:4817

約数の個数: 16

約数和(自身を含む): 26790400

約数和(自身を除く): 5463003

約数列:

[1, 7, 13, 49, 91, 343, 637, 4459, 4783, 33481, 62179, 234367, 435253, 1640569, 3046771, 21327397]

約数ペア:

[(1, 21327397), (7, 3046771), (13, 1640569), (49, 435253), (91, 234367), (343, 62179), (637, 33481), (4459, 4783)]