19997745

素因数分解:

$3^1\times 5^1\times {\mathrm{971}}^1\times {\mathrm{1373}}^1$

素因数の和:2352

約数の個数: 16

約数和(自身を含む): 32052672

約数和(自身を除く): 12054927

約数列:

[1, 3, 5, 15, 971, 1373, 2913, 4119, 4855, 6865, 14565, 20595, 1333183, 3999549, 6665915, 19997745]

約数ペア:

[(1, 19997745), (3, 6665915), (5, 3999549), (15, 1333183), (971, 20595), (1373, 14565), (2913, 6865), (4119, 4855)]