21380301

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{587}}^1$

素因数の和:686

約数の個数: 32

約数和(自身を含む): 33868800

約数和(自身を除く): 12488499

約数列:

[1, 3, 9, 19, 27, 57, 71, 171, 213, 513, 587, 639, 1349, 1761, 1917, 4047, 5283, 11153, 12141, 15849, 33459, 36423, 41677, 100377, 125031, 301131, 375093, 791863, 1125279, 2375589, 7126767, 21380301]

約数ペア:

[(1, 21380301), (3, 7126767), (9, 2375589), (19, 1125279), (27, 791863), (57, 375093), (71, 301131), (171, 125031), (213, 100377), (513, 41677), (587, 36423), (639, 33459), (1349, 15849), (1761, 12141), (1917, 11153), (4047, 5283)]