21320819

素因数分解:

${\mathrm{13}}^1\times {\mathrm{43}}^2\times {\mathrm{887}}^1$

素因数の和:986

約数の個数: 12

約数和(自身を含む): 23533776

約数和(自身を除く): 2212957

約数列:

[1, 13, 43, 559, 887, 1849, 11531, 24037, 38141, 495833, 1640063, 21320819]

約数ペア:

[(1, 21320819), (13, 1640063), (43, 495833), (559, 38141), (887, 24037), (1849, 11531)]