19859985

素因数分解:

$3^4\times 5^1\times {\mathrm{49037}}^1$

素因数の和:49054

約数の個数: 20

約数和(自身を含む): 35601588

約数和(自身を除く): 15741603

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 49037, 147111, 245185, 441333, 735555, 1323999, 2206665, 3971997, 6619995, 19859985]

約数ペア:

[(1, 19859985), (3, 6619995), (5, 3971997), (9, 2206665), (15, 1323999), (27, 735555), (45, 441333), (81, 245185), (135, 147111), (405, 49037)]