20405008

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{98101}}^1$

素因数の和:98122

約数の個数: 20

約数和(自身を含む): 42576268

約数和(自身を除く): 22171260

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 98101, 196202, 392404, 784808, 1275313, 1569616, 2550626, 5101252, 10202504, 20405008]

約数ペア:

[(1, 20405008), (2, 10202504), (4, 5101252), (8, 2550626), (13, 1569616), (16, 1275313), (26, 784808), (52, 392404), (104, 196202), (208, 98101)]