19988386

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{8821}}^1$

素因数の和:8937

約数の個数: 16

約数和(自身を含む): 33029568

約数和(自身を除く): 13041182

約数列:

[1, 2, 11, 22, 103, 206, 1133, 2266, 8821, 17642, 97031, 194062, 908563, 1817126, 9994193, 19988386]

約数ペア:

[(1, 19988386), (2, 9994193), (11, 1817126), (22, 908563), (103, 194062), (206, 97031), (1133, 17642), (2266, 8821)]