18990433

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{10723}}^1$

素因数の和:10764

約数の個数: 16

約数和(自身を含む): 24708096

約数和(自身を除く): 5717663

約数列:

[1, 7, 11, 23, 77, 161, 253, 1771, 10723, 75061, 117953, 246629, 825671, 1726403, 2712919, 18990433]

約数ペア:

[(1, 18990433), (7, 2712919), (11, 1726403), (23, 825671), (77, 246629), (161, 117953), (253, 75061), (1771, 10723)]