19984515

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{21841}}^1$

素因数の和:21910

約数の個数: 16

約数和(自身を含む): 32500896

約数和(自身を除く): 12516381

約数列:

[1, 3, 5, 15, 61, 183, 305, 915, 21841, 65523, 109205, 327615, 1332301, 3996903, 6661505, 19984515]

約数ペア:

[(1, 19984515), (3, 6661505), (5, 3996903), (15, 1332301), (61, 327615), (183, 109205), (305, 65523), (915, 21841)]