20121209

素因数分解:

${\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1$

素因数の和:344

約数の個数: 16

約数和(自身を含む): 21844800

約数和(自身を除く): 1723591

約数列:

[1, 19, 73, 89, 163, 1387, 1691, 3097, 6497, 11899, 14507, 123443, 226081, 275633, 1059011, 20121209]

約数ペア:

[(1, 20121209), (19, 1059011), (73, 275633), (89, 226081), (163, 123443), (1387, 14507), (1691, 11899), (3097, 6497)]