128315840

素因数分解:

$2^6\times 5^1\times {\mathrm{281}}^1\times {\mathrm{1427}}^1$

素因数の和:1725

約数の個数: 56

約数和(自身を含む): 306854352

約数和(自身を除く): 178538512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 281, 320, 562, 1124, 1405, 1427, 2248, 2810, 2854, 4496, 5620, 5708, 7135, 8992, 11240, 11416, 14270, 17984, 22480, 22832, 28540, 44960, 45664, 57080, 89920, 91328, 114160, 228320, 400987, 456640, 801974, 1603948, 2004935, 3207896, 4009870, 6415792, 8019740, 12831584, 16039480, 25663168, 32078960, 64157920, 128315840]

約数ペア:

[(1, 128315840), (2, 64157920), (4, 32078960), (5, 25663168), (8, 16039480), (10, 12831584), (16, 8019740), (20, 6415792), (32, 4009870), (40, 3207896), (64, 2004935), (80, 1603948), (160, 801974), (281, 456640), (320, 400987), (562, 228320), (1124, 114160), (1405, 91328), (1427, 89920), (2248, 57080), (2810, 45664), (2854, 44960), (4496, 28540), (5620, 22832), (5708, 22480), (7135, 17984), (8992, 14270), (11240, 11416)]