21351231

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{11351}}^1$

素因数の和:11387

約数の個数: 24

約数和(自身を含む): 35418240

約数和(自身を除く): 14067009

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 171, 209, 627, 1881, 11351, 34053, 102159, 124861, 215669, 374583, 647007, 1123749, 1941021, 2372359, 7117077, 21351231]

約数ペア:

[(1, 21351231), (3, 7117077), (9, 2372359), (11, 1941021), (19, 1123749), (33, 647007), (57, 374583), (99, 215669), (171, 124861), (209, 102159), (627, 34053), (1881, 11351)]