21167978

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{26263}}^1$

素因数の和:26309

約数の個数: 16

約数和(自身を含む): 35298816

約数和(自身を除く): 14130838

約数列:

[1, 2, 13, 26, 31, 62, 403, 806, 26263, 52526, 341419, 682838, 814153, 1628306, 10583989, 21167978]

約数ペア:

[(1, 21167978), (2, 10583989), (13, 1628306), (26, 814153), (31, 682838), (62, 341419), (403, 52526), (806, 26263)]