21819421

素因数分解:

${\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:181

約数の個数: 24

約数和(自身を含む): 25087104

約数和(自身を除く): 3267683

約数列:

[1, 13, 41, 47, 67, 169, 533, 611, 871, 1927, 2747, 3149, 6929, 7943, 11323, 25051, 35711, 40937, 129109, 325663, 464243, 532181, 1678417, 21819421]

約数ペア:

[(1, 21819421), (13, 1678417), (41, 532181), (47, 464243), (67, 325663), (169, 129109), (533, 40937), (611, 35711), (871, 25051), (1927, 11323), (2747, 7943), (3149, 6929)]