21000491998

素因数分解:

$2^1\times {\mathrm{641}}^1\times {\mathrm{1109}}^1\times {\mathrm{14771}}^1$

素因数の和:16523

約数の個数: 16

約数和(自身を含む): 31580467920

約数和(自身を除く): 10579975922

約数列:

[1, 2, 641, 1109, 1282, 2218, 14771, 29542, 710869, 1421738, 9468211, 16381039, 18936422, 32762078, 10500245999, 21000491998]

約数ペア:

[(1, 21000491998), (2, 10500245999), (641, 32762078), (1109, 18936422), (1282, 16381039), (2218, 9468211), (14771, 1421738), (29542, 710869)]