128814867

素因数分解:

$3^4\times {\mathrm{211}}^1\times {\mathrm{7537}}^1$

素因数の和:7760

約数の個数: 20

約数和(自身を含む): 193364776

約数和(自身を除く): 64549909

約数列:

[1, 3, 9, 27, 81, 211, 633, 1899, 5697, 7537, 17091, 22611, 67833, 203499, 610497, 1590307, 4770921, 14312763, 42938289, 128814867]

約数ペア:

[(1, 128814867), (3, 42938289), (9, 14312763), (27, 4770921), (81, 1590307), (211, 610497), (633, 203499), (1899, 67833), (5697, 22611), (7537, 17091)]