217439691

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{240797}}^1$

素因数の和:240850

約数の個数: 16

約数和(自身を含む): 339043584

約数和(自身を除く): 121603893

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 240797, 722391, 1685579, 5056737, 10354271, 31062813, 72479897, 217439691]

約数ペア:

[(1, 217439691), (3, 72479897), (7, 31062813), (21, 10354271), (43, 5056737), (129, 1685579), (301, 722391), (903, 240797)]