21224673

素因数分解:

$3^4\times {\mathrm{157}}^1\times {\mathrm{1669}}^1$

素因数の和:1838

約数の個数: 20

約数和(自身を含む): 31927060

約数和(自身を除く): 10702387

約数列:

[1, 3, 9, 27, 81, 157, 471, 1413, 1669, 4239, 5007, 12717, 15021, 45063, 135189, 262033, 786099, 2358297, 7074891, 21224673]

約数ペア:

[(1, 21224673), (3, 7074891), (9, 2358297), (27, 786099), (81, 262033), (157, 135189), (471, 45063), (1413, 15021), (1669, 12717), (4239, 5007)]