21143979

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{2333}}^1$

素因数の和:2411

約数の個数: 24

約数和(自身を含む): 32769360

約数和(自身を除く): 11625381

約数列:

[1, 3, 9, 19, 53, 57, 159, 171, 477, 1007, 2333, 3021, 6999, 9063, 20997, 44327, 123649, 132981, 370947, 398943, 1112841, 2349331, 7047993, 21143979]

約数ペア:

[(1, 21143979), (3, 7047993), (9, 2349331), (19, 1112841), (53, 398943), (57, 370947), (159, 132981), (171, 123649), (477, 44327), (1007, 20997), (2333, 9063), (3021, 6999)]