1917909

素因数分解:

$3^2\times 7^2\times {\mathrm{4349}}^1$

素因数の和:4369

約数の個数: 18

約数和(自身を含む): 3223350

約数和(自身を除く): 1305441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 4349, 13047, 30443, 39141, 91329, 213101, 273987, 639303, 1917909]

約数ペア:

[(1, 1917909), (3, 639303), (7, 273987), (9, 213101), (21, 91329), (49, 39141), (63, 30443), (147, 13047), (441, 4349)]