21871090

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{2677}}^1$

素因数の和:2746

約数の個数: 32

約数和(自身を含む): 42419520

約数和(自身を除く): 20548430

約数列:

[1, 2, 5, 10, 19, 38, 43, 86, 95, 190, 215, 430, 817, 1634, 2677, 4085, 5354, 8170, 13385, 26770, 50863, 101726, 115111, 230222, 254315, 508630, 575555, 1151110, 2187109, 4374218, 10935545, 21871090]

約数ペア:

[(1, 21871090), (2, 10935545), (5, 4374218), (10, 2187109), (19, 1151110), (38, 575555), (43, 508630), (86, 254315), (95, 230222), (190, 115111), (215, 101726), (430, 50863), (817, 26770), (1634, 13385), (2677, 8170), (4085, 5354)]