19991992

素因数分解:

$2^3\times {\mathrm{359}}^1\times {\mathrm{6961}}^1$

素因数の和:7326

約数の個数: 16

約数和(自身を含む): 37594800

約数和(自身を除く): 17602808

約数列:

[1, 2, 4, 8, 359, 718, 1436, 2872, 6961, 13922, 27844, 55688, 2498999, 4997998, 9995996, 19991992]

約数ペア:

[(1, 19991992), (2, 9995996), (4, 4997998), (8, 2498999), (359, 55688), (718, 27844), (1436, 13922), (2872, 6961)]