19957185

素因数分解:

$3^4\times 5^1\times {\mathrm{49277}}^1$

素因数の和:49294

約数の個数: 20

約数和(自身を含む): 35775828

約数和(自身を除く): 15818643

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 49277, 147831, 246385, 443493, 739155, 1330479, 2217465, 3991437, 6652395, 19957185]

約数ペア:

[(1, 19957185), (3, 6652395), (5, 3991437), (9, 2217465), (15, 1330479), (27, 739155), (45, 443493), (81, 246385), (135, 147831), (405, 49277)]