278310249

素因数分解:

$3^4\times 7^2\times {\mathrm{70121}}^1$

素因数の和:70147

約数の個数: 30

約数和(自身を含む): 483631434

約数和(自身を除く): 205321185

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323, 3969, 70121, 210363, 490847, 631089, 1472541, 1893267, 3435929, 4417623, 5679801, 10307787, 13252869, 30923361, 39758607, 92770083, 278310249]

約数ペア:

[(1, 278310249), (3, 92770083), (7, 39758607), (9, 30923361), (21, 13252869), (27, 10307787), (49, 5679801), (63, 4417623), (81, 3435929), (147, 1893267), (189, 1472541), (441, 631089), (567, 490847), (1323, 210363), (3969, 70121)]