19889649

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1223}}^1$

素因数の和:1381

約数の個数: 24

約数和(自身を含む): 31187520

約数和(自身を除く): 11297871

約数列:

[1, 3, 9, 13, 39, 117, 139, 417, 1223, 1251, 1807, 3669, 5421, 11007, 15899, 16263, 47697, 143091, 169997, 509991, 1529973, 2209961, 6629883, 19889649]

約数ペア:

[(1, 19889649), (3, 6629883), (9, 2209961), (13, 1529973), (39, 509991), (117, 169997), (139, 143091), (417, 47697), (1223, 16263), (1251, 15899), (1807, 11007), (3669, 5421)]