20521203

素因数分解:

$3^1\times {\mathrm{59}}^1\times {\mathrm{269}}^1\times {\mathrm{431}}^1$

素因数の和:762

約数の個数: 16

約数和(自身を含む): 27993600

約数和(自身を除く): 7472397

約数列:

[1, 3, 59, 177, 269, 431, 807, 1293, 15871, 25429, 47613, 76287, 115939, 347817, 6840401, 20521203]

約数ペア:

[(1, 20521203), (3, 6840401), (59, 347817), (177, 115939), (269, 76287), (431, 47613), (807, 25429), (1293, 15871)]