21504175055

素因数分解:

$5^1\times {\mathrm{11}}^3\times {\mathrm{71}}^2\times {\mathrm{641}}^1$

素因数の和:821

約数の個数: 48

約数和(自身を含む): 28833884064

約数和(自身を除く): 7329709009

約数列:

[1, 5, 11, 55, 71, 121, 355, 605, 641, 781, 1331, 3205, 3905, 5041, 6655, 7051, 8591, 25205, 35255, 42955, 45511, 55451, 77561, 94501, 227555, 277255, 387805, 472505, 500621, 609961, 853171, 2503105, 3049805, 3231281, 4265855, 5506831, 6709571, 16156405, 27534155, 33547855, 35544091, 60575141, 177720455, 302875705, 390985001, 1954925005, 4300835011, 21504175055]

約数ペア:

[(1, 21504175055), (5, 4300835011), (11, 1954925005), (55, 390985001), (71, 302875705), (121, 177720455), (355, 60575141), (605, 35544091), (641, 33547855), (781, 27534155), (1331, 16156405), (3205, 6709571), (3905, 5506831), (5041, 4265855), (6655, 3231281), (7051, 3049805), (8591, 2503105), (25205, 853171), (35255, 609961), (42955, 500621), (45511, 472505), (55451, 387805), (77561, 277255), (94501, 227555)]