21656265

素因数分解:

$3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1$

素因数の和:349

約数の個数: 32

約数和(自身を含む): 35582976

約数和(自身を除く): 13926711

約数列:

[1, 3, 5, 15, 103, 107, 131, 309, 321, 393, 515, 535, 655, 1545, 1605, 1965, 11021, 13493, 14017, 33063, 40479, 42051, 55105, 67465, 70085, 165315, 202395, 210255, 1443751, 4331253, 7218755, 21656265]

約数ペア:

[(1, 21656265), (3, 7218755), (5, 4331253), (15, 1443751), (103, 210255), (107, 202395), (131, 165315), (309, 70085), (321, 67465), (393, 55105), (515, 42051), (535, 40479), (655, 33063), (1545, 14017), (1605, 13493), (1965, 11021)]