278312139

素因数分解:

$3^3\times 7^1\times {\mathrm{1472551}}^1$

素因数の和:1472567

約数の個数: 16

約数和(自身を含む): 471216640

約数和(自身を除く): 192904501

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 1472551, 4417653, 10307857, 13252959, 30923571, 39758877, 92770713, 278312139]

約数ペア:

[(1, 278312139), (3, 92770713), (7, 39758877), (9, 30923571), (21, 13252959), (27, 10307857), (63, 4417653), (189, 1472551)]