18881985

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{74047}}^1$

素因数の和:74072

約数の個数: 16

約数和(自身を含む): 31988736

約数和(自身を除く): 13106751

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 74047, 222141, 370235, 1110705, 1258799, 3776397, 6293995, 18881985]

約数ペア:

[(1, 18881985), (3, 6293995), (5, 3776397), (15, 1258799), (17, 1110705), (51, 370235), (85, 222141), (255, 74047)]