20210799

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{20477}}^1$

素因数の和:20534

約数の個数: 16

約数和(自身を含む): 31454208

約数和(自身を除く): 11243409

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 20477, 61431, 143339, 430017, 962419, 2887257, 6736933, 20210799]

約数ペア:

[(1, 20210799), (3, 6736933), (7, 2887257), (21, 962419), (47, 430017), (141, 143339), (329, 61431), (987, 20477)]