21565647

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{1559}}^1$

素因数の和:1647

約数の個数: 24

約数和(自身を含む): 32853600

約数和(自身を除く): 11287953

約数列:

[1, 3, 9, 29, 53, 87, 159, 261, 477, 1537, 1559, 4611, 4677, 13833, 14031, 45211, 82627, 135633, 247881, 406899, 743643, 2396183, 7188549, 21565647]

約数ペア:

[(1, 21565647), (3, 7188549), (9, 2396183), (29, 743643), (53, 406899), (87, 247881), (159, 135633), (261, 82627), (477, 45211), (1537, 14031), (1559, 13833), (4611, 4677)]