21507976

素因数分解:

$2^3\times 7^1\times {\mathrm{433}}^1\times {\mathrm{887}}^1$

素因数の和:1333

約数の個数: 32

約数和(自身を含む): 46247040

約数和(自身を除く): 24739064

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 433, 866, 887, 1732, 1774, 3031, 3464, 3548, 6062, 6209, 7096, 12124, 12418, 24248, 24836, 49672, 384071, 768142, 1536284, 2688497, 3072568, 5376994, 10753988, 21507976]

約数ペア:

[(1, 21507976), (2, 10753988), (4, 5376994), (7, 3072568), (8, 2688497), (14, 1536284), (28, 768142), (56, 384071), (433, 49672), (866, 24836), (887, 24248), (1732, 12418), (1774, 12124), (3031, 7096), (3464, 6209), (3548, 6062)]