21919268

素因数分解:

$2^2\times 7^2\times {\mathrm{111833}}^1$

素因数の和:111851

約数の個数: 18

約数和(自身を含む): 44621766

約数和(自身を除く): 22702498

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 111833, 223666, 447332, 782831, 1565662, 3131324, 5479817, 10959634, 21919268]

約数ペア:

[(1, 21919268), (2, 10959634), (4, 5479817), (7, 3131324), (14, 1565662), (28, 782831), (49, 447332), (98, 223666), (196, 111833)]