20809788

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{853}}^1$

素因数の和:986

約数の個数: 48

約数和(自身を含む): 51649920

約数和(自身を除く): 30840132

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 107, 114, 214, 228, 321, 428, 642, 853, 1284, 1706, 2033, 2559, 3412, 4066, 5118, 6099, 8132, 10236, 12198, 16207, 24396, 32414, 48621, 64828, 91271, 97242, 182542, 194484, 273813, 365084, 547626, 1095252, 1734149, 3468298, 5202447, 6936596, 10404894, 20809788]

約数ペア:

[(1, 20809788), (2, 10404894), (3, 6936596), (4, 5202447), (6, 3468298), (12, 1734149), (19, 1095252), (38, 547626), (57, 365084), (76, 273813), (107, 194484), (114, 182542), (214, 97242), (228, 91271), (321, 64828), (428, 48621), (642, 32414), (853, 24396), (1284, 16207), (1706, 12198), (2033, 10236), (2559, 8132), (3412, 6099), (4066, 5118)]