21878444

素因数分解:

$2^2\times 7^1\times {\mathrm{263}}^1\times {\mathrm{2971}}^1$

素因数の和:3245

約数の個数: 24

約数和(自身を含む): 43938048

約数和(自身を除く): 22059604

約数列:

[1, 2, 4, 7, 14, 28, 263, 526, 1052, 1841, 2971, 3682, 5942, 7364, 11884, 20797, 41594, 83188, 781373, 1562746, 3125492, 5469611, 10939222, 21878444]

約数ペア:

[(1, 21878444), (2, 10939222), (4, 5469611), (7, 3125492), (14, 1562746), (28, 781373), (263, 83188), (526, 41594), (1052, 20797), (1841, 11884), (2971, 7364), (3682, 5942)]