21338984

素因数分解:

$2^3\times {\mathrm{389}}^1\times {\mathrm{6857}}^1$

素因数の和:7252

約数の個数: 16

約数和(自身を含む): 40119300

約数和(自身を除く): 18780316

約数列:

[1, 2, 4, 8, 389, 778, 1556, 3112, 6857, 13714, 27428, 54856, 2667373, 5334746, 10669492, 21338984]

約数ペア:

[(1, 21338984), (2, 10669492), (4, 5334746), (8, 2667373), (389, 54856), (778, 27428), (1556, 13714), (3112, 6857)]