19990016

素因数分解:

$2^9\times {\mathrm{39043}}^1$

素因数の和:39061

約数の個数: 20

約数和(自身を含む): 39942012

約数和(自身を除く): 19951996

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 39043, 78086, 156172, 312344, 624688, 1249376, 2498752, 4997504, 9995008, 19990016]

約数ペア:

[(1, 19990016), (2, 9995008), (4, 4997504), (8, 2498752), (16, 1249376), (32, 624688), (64, 312344), (128, 156172), (256, 78086), (512, 39043)]