19198431

素因数分解:

$3^3\times 7^1\times {\mathrm{157}}^1\times {\mathrm{647}}^1$

素因数の和:820

約数の個数: 32

約数和(自身を含む): 32762880

約数和(自身を除く): 13564449

約数列:

[1, 3, 7, 9, 21, 27, 63, 157, 189, 471, 647, 1099, 1413, 1941, 3297, 4239, 4529, 5823, 9891, 13587, 17469, 29673, 40761, 101579, 122283, 304737, 711053, 914211, 2133159, 2742633, 6399477, 19198431]

約数ペア:

[(1, 19198431), (3, 6399477), (7, 2742633), (9, 2133159), (21, 914211), (27, 711053), (63, 304737), (157, 122283), (189, 101579), (471, 40761), (647, 29673), (1099, 17469), (1413, 13587), (1941, 9891), (3297, 5823), (4239, 4529)]