19990243

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{9551}}^1$

素因数の和:9594

約数の個数: 16

約数和(自身を含む): 25675776

約数和(自身を除く): 5685533

約数列:

[1, 7, 13, 23, 91, 161, 299, 2093, 9551, 66857, 124163, 219673, 869141, 1537711, 2855749, 19990243]

約数ペア:

[(1, 19990243), (7, 2855749), (13, 1537711), (23, 869141), (91, 219673), (161, 124163), (299, 66857), (2093, 9551)]