21200902

素因数分解:

$2^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1\times {\mathrm{1061}}^1$

素因数の和:1263

約数の個数: 16

約数和(自身を含む): 32471712

約数和(自身を除く): 11270810

約数列:

[1, 2, 97, 103, 194, 206, 1061, 2122, 9991, 19982, 102917, 109283, 205834, 218566, 10600451, 21200902]

約数ペア:

[(1, 21200902), (2, 10600451), (97, 218566), (103, 205834), (194, 109283), (206, 102917), (1061, 19982), (2122, 9991)]