1808960020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{2039}}^1\times {\mathrm{6337}}^1$

素因数の和:8392

約数の個数: 48

約数和(自身を含む): 4344318720

約数和(自身を除く): 2535358700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2039, 4078, 6337, 8156, 10195, 12674, 14273, 20390, 25348, 28546, 31685, 40780, 44359, 57092, 63370, 71365, 88718, 126740, 142730, 177436, 221795, 285460, 443590, 887180, 12921143, 25842286, 51684572, 64605715, 90448001, 129211430, 180896002, 258422860, 361792004, 452240005, 904480010, 1808960020]

約数ペア:

[(1, 1808960020), (2, 904480010), (4, 452240005), (5, 361792004), (7, 258422860), (10, 180896002), (14, 129211430), (20, 90448001), (28, 64605715), (35, 51684572), (70, 25842286), (140, 12921143), (2039, 887180), (4078, 443590), (6337, 285460), (8156, 221795), (10195, 177436), (12674, 142730), (14273, 126740), (20390, 88718), (25348, 71365), (28546, 63370), (31685, 57092), (40780, 44359)]