138655840

素因数分解:

$2^5\times 5^1\times {\mathrm{887}}^1\times {\mathrm{977}}^1$

素因数の和:1879

約数の個数: 48

約数和(自身を含む): 328279392

約数和(自身を除く): 189623552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 887, 977, 1774, 1954, 3548, 3908, 4435, 4885, 7096, 7816, 8870, 9770, 14192, 15632, 17740, 19540, 28384, 31264, 35480, 39080, 70960, 78160, 141920, 156320, 866599, 1733198, 3466396, 4332995, 6932792, 8665990, 13865584, 17331980, 27731168, 34663960, 69327920, 138655840]

約数ペア:

[(1, 138655840), (2, 69327920), (4, 34663960), (5, 27731168), (8, 17331980), (10, 13865584), (16, 8665990), (20, 6932792), (32, 4332995), (40, 3466396), (80, 1733198), (160, 866599), (887, 156320), (977, 141920), (1774, 78160), (1954, 70960), (3548, 39080), (3908, 35480), (4435, 31264), (4885, 28384), (7096, 19540), (7816, 17740), (8870, 15632), (9770, 14192)]