1390809

素因数分解:

$3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{643}}^1$

素因数の和:756

約数の個数: 16

約数和(自身を含む): 2143232

約数和(自身を除く): 752423

約数列:

[1, 3, 7, 21, 103, 309, 643, 721, 1929, 2163, 4501, 13503, 66229, 198687, 463603, 1390809]

約数ペア:

[(1, 1390809), (3, 463603), (7, 198687), (21, 66229), (103, 13503), (309, 4501), (643, 2163), (721, 1929)]