18939992

素因数分解:

$2^3\times {\mathrm{991}}^1\times {\mathrm{2389}}^1$

素因数の和:3386

約数の個数: 16

約数和(自身を含む): 35563200

約数和(自身を除く): 16623208

約数列:

[1, 2, 4, 8, 991, 1982, 2389, 3964, 4778, 7928, 9556, 19112, 2367499, 4734998, 9469996, 18939992]

約数ペア:

[(1, 18939992), (2, 9469996), (4, 4734998), (8, 2367499), (991, 19112), (1982, 9556), (2389, 7928), (3964, 4778)]