19895821

素因数分解:

${\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{199}}^1$

素因数の和:420

約数の個数: 16

約数和(自身を含む): 22320000

約数和(自身を除く): 2424179

約数列:

[1, 11, 61, 149, 199, 671, 1639, 2189, 9089, 12139, 29651, 99979, 133529, 326161, 1808711, 19895821]

約数ペア:

[(1, 19895821), (11, 1808711), (61, 326161), (149, 133529), (199, 99979), (671, 29651), (1639, 12139), (2189, 9089)]