19940487

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{239}}^1$

素因数の和:415

約数の個数: 32

約数和(自身を含む): 31795200

約数和(自身を除く): 11854713

約数列:

[1, 3, 7, 21, 29, 87, 137, 203, 239, 411, 609, 717, 959, 1673, 2877, 3973, 5019, 6931, 11919, 20793, 27811, 32743, 48517, 83433, 98229, 145551, 229201, 687603, 949547, 2848641, 6646829, 19940487]

約数ペア:

[(1, 19940487), (3, 6646829), (7, 2848641), (21, 949547), (29, 687603), (87, 229201), (137, 145551), (203, 98229), (239, 83433), (411, 48517), (609, 32743), (717, 27811), (959, 20793), (1673, 11919), (2877, 6931), (3973, 5019)]