21252363

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{881}}^1$

素因数の和:955

約数の個数: 32

約数和(自身を含む): 33530112

約数和(自身を除く): 12277749

約数列:

[1, 3, 11, 17, 33, 43, 51, 129, 187, 473, 561, 731, 881, 1419, 2193, 2643, 8041, 9691, 14977, 24123, 29073, 37883, 44931, 113649, 164747, 416713, 494241, 644011, 1250139, 1932033, 7084121, 21252363]

約数ペア:

[(1, 21252363), (3, 7084121), (11, 1932033), (17, 1250139), (33, 644011), (43, 494241), (51, 416713), (129, 164747), (187, 113649), (473, 44931), (561, 37883), (731, 29073), (881, 24123), (1419, 14977), (2193, 9691), (2643, 8041)]