19909858

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{9209}}^1$

素因数の和:9281

約数の個数: 16

約数和(自身を含む): 31829760

約数和(自身を除く): 11919902

約数列:

[1, 2, 23, 46, 47, 94, 1081, 2162, 9209, 18418, 211807, 423614, 432823, 865646, 9954929, 19909858]

約数ペア:

[(1, 19909858), (2, 9954929), (23, 865646), (46, 432823), (47, 423614), (94, 211807), (1081, 18418), (2162, 9209)]