20321249

素因数分解:

${\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{421}}^1$

素因数の和:560

約数の個数: 16

約数和(自身を含む): 22686720

約数和(自身を除く): 2365471

約数列:

[1, 13, 47, 79, 421, 611, 1027, 3713, 5473, 19787, 33259, 48269, 257231, 432367, 1563173, 20321249]

約数ペア:

[(1, 20321249), (13, 1563173), (47, 432367), (79, 257231), (421, 48269), (611, 33259), (1027, 19787), (3713, 5473)]