1288392021

素因数分解:

$3^3\times 7^1\times {\mathrm{6816889}}^1$

素因数の和:6816905

約数の個数: 16

約数和(自身を含む): 2181404800

約数和(自身を除く): 893012779

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 6816889, 20450667, 47718223, 61352001, 143154669, 184056003, 429464007, 1288392021]

約数ペア:

[(1, 1288392021), (3, 429464007), (7, 184056003), (9, 143154669), (21, 61352001), (27, 47718223), (63, 20450667), (189, 6816889)]