21454209

素因数分解:

$3^2\times 7^2\times {\mathrm{48649}}^1$

素因数の和:48669

約数の個数: 18

約数和(自身を含む): 36049650

約数和(自身を除く): 14595441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 48649, 145947, 340543, 437841, 1021629, 2383801, 3064887, 7151403, 21454209]

約数ペア:

[(1, 21454209), (3, 7151403), (7, 3064887), (9, 2383801), (21, 1021629), (49, 437841), (63, 340543), (147, 145947), (441, 48649)]