21881936

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{9839}}^1$

素因数の和:9986

約数の個数: 20

約数和(自身を含む): 42705600

約数和(自身を除く): 20823664

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 9839, 19678, 39356, 78712, 157424, 1367621, 2735242, 5470484, 10940968, 21881936]

約数ペア:

[(1, 21881936), (2, 10940968), (4, 5470484), (8, 2735242), (16, 1367621), (139, 157424), (278, 78712), (556, 39356), (1112, 19678), (2224, 9839)]