128256830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{3511}}^1$

素因数の和:3812

約数の個数: 32

約数和(自身を含む): 249576768

約数和(自身を除く): 121319938

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 281, 562, 1405, 2810, 3511, 3653, 7022, 7306, 17555, 18265, 35110, 36530, 45643, 91286, 228215, 456430, 986591, 1973182, 4932955, 9865910, 12825683, 25651366, 64128415, 128256830]

約数ペア:

[(1, 128256830), (2, 64128415), (5, 25651366), (10, 12825683), (13, 9865910), (26, 4932955), (65, 1973182), (130, 986591), (281, 456430), (562, 228215), (1405, 91286), (2810, 45643), (3511, 36530), (3653, 35110), (7022, 18265), (7306, 17555)]