21656912

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{79621}}^1$

素因数の和:79646

約数の個数: 20

約数和(自身を含む): 44429076

約数和(自身を除く): 22772164

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 79621, 159242, 318484, 636968, 1273936, 1353557, 2707114, 5414228, 10828456, 21656912]

約数ペア:

[(1, 21656912), (2, 10828456), (4, 5414228), (8, 2707114), (16, 1353557), (17, 1273936), (34, 636968), (68, 318484), (136, 159242), (272, 79621)]