278312517

素因数分解:

$3^6\times 7^1\times {\mathrm{54539}}^1$

素因数の和:54564

約数の個数: 28

約数和(自身を含む): 476897760

約数和(自身を除く): 198585243

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1701, 5103, 54539, 163617, 381773, 490851, 1145319, 1472553, 3435957, 4417659, 10307871, 13252977, 30923613, 39758931, 92770839, 278312517]

約数ペア:

[(1, 278312517), (3, 92770839), (7, 39758931), (9, 30923613), (21, 13252977), (27, 10307871), (63, 4417659), (81, 3435957), (189, 1472553), (243, 1145319), (567, 490851), (729, 381773), (1701, 163617), (5103, 54539)]