19981136

素因数分解:

$2^4\times 7^1\times {\mathrm{178403}}^1$

素因数の和:178418

約数の個数: 20

約数和(自身を含む): 44244192

約数和(自身を除く): 24263056

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 178403, 356806, 713612, 1248821, 1427224, 2497642, 2854448, 4995284, 9990568, 19981136]

約数ペア:

[(1, 19981136), (2, 9990568), (4, 4995284), (7, 2854448), (8, 2497642), (14, 1427224), (16, 1248821), (28, 713612), (56, 356806), (112, 178403)]