21943930

素因数分解:

$2^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{15787}}^1$

素因数の和:15933

約数の個数: 16

約数和(自身を含む): 39785760

約数和(自身を除く): 17841830

約数列:

[1, 2, 5, 10, 139, 278, 695, 1390, 15787, 31574, 78935, 157870, 2194393, 4388786, 10971965, 21943930]

約数ペア:

[(1, 21943930), (2, 10971965), (5, 4388786), (10, 2194393), (139, 157870), (278, 78935), (695, 31574), (1390, 15787)]