19999859042

素因数分解:

$2^1\times {\mathrm{139}}^1\times {\mathrm{1109}}^1\times {\mathrm{64871}}^1$

素因数の和:66121

約数の個数: 16

約数和(自身を含む): 30243326400

約数和(自身を除く): 10243467358

約数列:

[1, 2, 139, 278, 1109, 2218, 64871, 129742, 154151, 308302, 9017069, 18034138, 71941939, 143883878, 9999929521, 19999859042]

約数ペア:

[(1, 19999859042), (2, 9999929521), (139, 143883878), (278, 71941939), (1109, 18034138), (2218, 9017069), (64871, 308302), (129742, 154151)]