19867984

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{9479}}^1$

素因数の和:9618

約数の個数: 20

約数和(自身を含む): 38792160

約数和(自身を除く): 18924176

約数列:

[1, 2, 4, 8, 16, 131, 262, 524, 1048, 2096, 9479, 18958, 37916, 75832, 151664, 1241749, 2483498, 4966996, 9933992, 19867984]

約数ペア:

[(1, 19867984), (2, 9933992), (4, 4966996), (8, 2483498), (16, 1241749), (131, 151664), (262, 75832), (524, 37916), (1048, 18958), (2096, 9479)]