16561168

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{79621}}^1$

素因数の和:79642

約数の個数: 20

約数和(自身を含む): 34555948

約数和(自身を除く): 17994780

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 79621, 159242, 318484, 636968, 1035073, 1273936, 2070146, 4140292, 8280584, 16561168]

約数ペア:

[(1, 16561168), (2, 8280584), (4, 4140292), (8, 2070146), (13, 1273936), (16, 1035073), (26, 636968), (52, 318484), (104, 159242), (208, 79621)]