2781905

素因数分解:

$5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1303}}^1$

素因数の和:1376

約数の個数: 16

約数和(自身を含む): 3880704

約数和(自身を除く): 1098799

約数列:

[1, 5, 7, 35, 61, 305, 427, 1303, 2135, 6515, 9121, 45605, 79483, 397415, 556381, 2781905]

約数ペア:

[(1, 2781905), (5, 556381), (7, 397415), (35, 79483), (61, 45605), (305, 9121), (427, 6515), (1303, 2135)]