21486355

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{241}}^1\times {\mathrm{1621}}^1$

素因数の和:1878

約数の個数: 16

約数和(自身を含む): 28261728

約数和(自身を除く): 6775373

約数列:

[1, 5, 11, 55, 241, 1205, 1621, 2651, 8105, 13255, 17831, 89155, 390661, 1953305, 4297271, 21486355]

約数ペア:

[(1, 21486355), (5, 4297271), (11, 1953305), (55, 390661), (241, 89155), (1205, 17831), (1621, 13255), (2651, 8105)]