28278963

素因数分解:

$3^4\times {\mathrm{127}}^1\times {\mathrm{2749}}^1$

素因数の和:2888

約数の個数: 20

約数和(自身を含む): 42592000

約数和(自身を除く): 14313037

約数列:

[1, 3, 9, 27, 81, 127, 381, 1143, 2749, 3429, 8247, 10287, 24741, 74223, 222669, 349123, 1047369, 3142107, 9426321, 28278963]

約数ペア:

[(1, 28278963), (3, 9426321), (9, 3142107), (27, 1047369), (81, 349123), (127, 222669), (381, 74223), (1143, 24741), (2749, 10287), (3429, 8247)]