20792989

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:225

約数の個数: 32

約数和(自身を含む): 26873856

約数和(自身を除く): 6080867

約数列:

[1, 7, 17, 23, 71, 107, 119, 161, 391, 497, 749, 1207, 1633, 1819, 2461, 2737, 7597, 8449, 11431, 12733, 17227, 27761, 41837, 53179, 129149, 174731, 194327, 292859, 904043, 1223117, 2970427, 20792989]

約数ペア:

[(1, 20792989), (7, 2970427), (17, 1223117), (23, 904043), (71, 292859), (107, 194327), (119, 174731), (161, 129149), (391, 53179), (497, 41837), (749, 27761), (1207, 17227), (1633, 12733), (1819, 11431), (2461, 8449), (2737, 7597)]