21485751

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53849}}^1$

素因数の和:53878

約数の個数: 16

約数和(自身を含む): 34464000

約数和(自身を除く): 12978249

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 53849, 161547, 376943, 1023131, 1130829, 3069393, 7161917, 21485751]

約数ペア:

[(1, 21485751), (3, 7161917), (7, 3069393), (19, 1130829), (21, 1023131), (57, 376943), (133, 161547), (399, 53849)]