21052581

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{607}}^1\times {\mathrm{1051}}^1$

素因数の和:1672

約数の個数: 16

約数和(自身を含む): 30701568

約数和(自身を除く): 9648987

約数列:

[1, 3, 11, 33, 607, 1051, 1821, 3153, 6677, 11561, 20031, 34683, 637957, 1913871, 7017527, 21052581]

約数ペア:

[(1, 21052581), (3, 7017527), (11, 1913871), (33, 637957), (607, 34683), (1051, 20031), (1821, 11561), (3153, 6677)]