16981245

素因数分解:

$3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1823}}^1$

素因数の和:1863

約数の個数: 40

約数和(自身を含む): 31781376

約数和(自身を除く): 14800131

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 81, 115, 135, 207, 345, 405, 621, 1035, 1823, 1863, 3105, 5469, 9115, 9315, 16407, 27345, 41929, 49221, 82035, 125787, 147663, 209645, 246105, 377361, 628935, 738315, 1132083, 1886805, 3396249, 5660415, 16981245]

約数ペア:

[(1, 16981245), (3, 5660415), (5, 3396249), (9, 1886805), (15, 1132083), (23, 738315), (27, 628935), (45, 377361), (69, 246105), (81, 209645), (115, 147663), (135, 125787), (207, 82035), (345, 49221), (405, 41929), (621, 27345), (1035, 16407), (1823, 9315), (1863, 9115), (3105, 5469)]