218617539

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{221497}}^1$

素因数の和:221554

約数の個数: 16

約数和(自身を含む): 340220928

約数和(自身を除く): 121603389

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 221497, 664491, 1550479, 4651437, 10410359, 31231077, 72872513, 218617539]

約数ペア:

[(1, 218617539), (3, 72872513), (7, 31231077), (21, 10410359), (47, 4651437), (141, 1550479), (329, 664491), (987, 221497)]