278885385

素因数分解:

$3^2\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{3119}}^1$

素因数の和:5117

約数の個数: 24

約数和(自身を含む): 483799680

約数和(自身を除く): 204914295

約数列:

[1, 3, 5, 9, 15, 45, 1987, 3119, 5961, 9357, 9935, 15595, 17883, 28071, 29805, 46785, 89415, 140355, 6197453, 18592359, 30987265, 55777077, 92961795, 278885385]

約数ペア:

[(1, 278885385), (3, 92961795), (5, 55777077), (9, 30987265), (15, 18592359), (45, 6197453), (1987, 140355), (3119, 89415), (5961, 46785), (9357, 29805), (9935, 28071), (15595, 17883)]