21047338

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{10247}}^1$

素因数の和:10341

約数の個数: 16

約数和(自身を含む): 34433280

約数和(自身を除く): 13385942

約数列:

[1, 2, 13, 26, 79, 158, 1027, 2054, 10247, 20494, 133211, 266422, 809513, 1619026, 10523669, 21047338]

約数ペア:

[(1, 21047338), (2, 10523669), (13, 1619026), (26, 809513), (79, 266422), (158, 133211), (1027, 20494), (2054, 10247)]