18980487

素因数分解:

$3^5\times {\mathrm{19}}^1\times {\mathrm{4111}}^1$

素因数の和:4145

約数の個数: 24

約数和(自身を含む): 29935360

約数和(自身を除く): 10954873

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 243, 513, 1539, 4111, 4617, 12333, 36999, 78109, 110997, 234327, 332991, 702981, 998973, 2108943, 6326829, 18980487]

約数ペア:

[(1, 18980487), (3, 6326829), (9, 2108943), (19, 998973), (27, 702981), (57, 332991), (81, 234327), (171, 110997), (243, 78109), (513, 36999), (1539, 12333), (4111, 4617)]