21791739

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{4801}}^1$

素因数の和:4910

約数の個数: 16

約数和(自身を含む): 31116960

約数和(自身を除く): 9325221

約数列:

[1, 3, 17, 51, 89, 267, 1513, 4539, 4801, 14403, 81617, 244851, 427289, 1281867, 7263913, 21791739]

約数ペア:

[(1, 21791739), (3, 7263913), (17, 1281867), (51, 427289), (89, 244851), (267, 81617), (1513, 14403), (4539, 4801)]