19921293

素因数分解:

$3^2\times 7^2\times {\mathrm{199}}^1\times {\mathrm{227}}^1$

素因数の和:446

約数の個数: 36

約数和(自身を含む): 33789600

約数和(自身を除く): 13868307

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 199, 227, 441, 597, 681, 1393, 1589, 1791, 2043, 4179, 4767, 9751, 11123, 12537, 14301, 29253, 33369, 45173, 87759, 100107, 135519, 316211, 406557, 948633, 2213477, 2845899, 6640431, 19921293]

約数ペア:

[(1, 19921293), (3, 6640431), (7, 2845899), (9, 2213477), (21, 948633), (49, 406557), (63, 316211), (147, 135519), (199, 100107), (227, 87759), (441, 45173), (597, 33369), (681, 29253), (1393, 14301), (1589, 12537), (1791, 11123), (2043, 9751), (4179, 4767)]