19808659

素因数分解:

${\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:275

約数の個数: 24

約数和(自身を含む): 23424000

約数和(自身を除く): 3615341

約数列:

[1, 13, 19, 31, 169, 199, 247, 403, 589, 2587, 3211, 3781, 5239, 6169, 7657, 33631, 49153, 80197, 99541, 117211, 638989, 1042561, 1523743, 19808659]

約数ペア:

[(1, 19808659), (13, 1523743), (19, 1042561), (31, 638989), (169, 117211), (199, 99541), (247, 80197), (403, 49153), (589, 33631), (2587, 7657), (3211, 6169), (3781, 5239)]