19729942

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{11047}}^1$

素因数の和:11115

約数の個数: 16

約数和(自身を含む): 31818240

約数和(自身を除く): 12088298

約数列:

[1, 2, 19, 38, 47, 94, 893, 1786, 11047, 22094, 209893, 419786, 519209, 1038418, 9864971, 19729942]

約数ペア:

[(1, 19729942), (2, 9864971), (19, 1038418), (38, 519209), (47, 419786), (94, 209893), (893, 22094), (1786, 11047)]