18991731

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{1367}}^1$

素因数の和:1802

約数の個数: 16

約数和(自身を含む): 27710208

約数和(自身を除く): 8718477

約数列:

[1, 3, 11, 33, 421, 1263, 1367, 4101, 4631, 13893, 15037, 45111, 575507, 1726521, 6330577, 18991731]

約数ペア:

[(1, 18991731), (3, 6330577), (11, 1726521), (33, 575507), (421, 45111), (1263, 15037), (1367, 13893), (4101, 4631)]