19949949

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1$

素因数の和:334

約数の個数: 32

約数和(自身を含む): 30720000

約数和(自身を除く): 10770051

約数列:

[1, 3, 9, 27, 47, 79, 141, 199, 237, 423, 597, 711, 1269, 1791, 2133, 3713, 5373, 9353, 11139, 15721, 28059, 33417, 47163, 84177, 100251, 141489, 252531, 424467, 738887, 2216661, 6649983, 19949949]

約数ペア:

[(1, 19949949), (3, 6649983), (9, 2216661), (27, 738887), (47, 424467), (79, 252531), (141, 141489), (199, 100251), (237, 84177), (423, 47163), (597, 33417), (711, 28059), (1269, 15721), (1791, 11139), (2133, 9353), (3713, 5373)]