128236479

素因数分解:

$3^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{21277}}^1$

素因数の和:21335

約数の個数: 24

約数和(自身を含む): 203758128

約数和(自身を除く): 75521649

約数列:

[1, 3, 7, 21, 41, 49, 123, 147, 287, 861, 2009, 6027, 21277, 63831, 148939, 446817, 872357, 1042573, 2617071, 3127719, 6106499, 18319497, 42745493, 128236479]

約数ペア:

[(1, 128236479), (3, 42745493), (7, 18319497), (21, 6106499), (41, 3127719), (49, 2617071), (123, 1042573), (147, 872357), (287, 446817), (861, 148939), (2009, 63831), (6027, 21277)]