28197820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{201413}}^1$

素因数の和:201429

約数の個数: 24

約数和(自身を含む): 67675104

約数和(自身を除く): 39477284

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 201413, 402826, 805652, 1007065, 1409891, 2014130, 2819782, 4028260, 5639564, 7049455, 14098910, 28197820]

約数ペア:

[(1, 28197820), (2, 14098910), (4, 7049455), (5, 5639564), (7, 4028260), (10, 2819782), (14, 2014130), (20, 1409891), (28, 1007065), (35, 805652), (70, 402826), (140, 201413)]