18901407

素因数分解:

$3^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{1811}}^1$

素因数の和:1899

約数の個数: 24

約数和(自身を含む): 29745792

約数和(自身を除く): 10844385

約数列:

[1, 3, 7, 21, 49, 71, 147, 213, 497, 1491, 1811, 3479, 5433, 10437, 12677, 38031, 88739, 128581, 266217, 385743, 900067, 2700201, 6300469, 18901407]

約数ペア:

[(1, 18901407), (3, 6300469), (7, 2700201), (21, 900067), (49, 385743), (71, 266217), (147, 128581), (213, 88739), (497, 38031), (1491, 12677), (1811, 10437), (3479, 5433)]