16561909

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{193}}^1$

素因数の和:277

約数の個数: 32

約数和(自身を含む): 21901824

約数和(自身を除く): 5339915

約数列:

[1, 7, 13, 23, 41, 91, 161, 193, 287, 299, 533, 943, 1351, 2093, 2509, 3731, 4439, 6601, 7913, 12259, 17563, 31073, 55391, 57707, 85813, 102869, 181999, 403949, 720083, 1273993, 2365987, 16561909]

約数ペア:

[(1, 16561909), (7, 2365987), (13, 1273993), (23, 720083), (41, 403949), (91, 181999), (161, 102869), (193, 85813), (287, 57707), (299, 55391), (533, 31073), (943, 17563), (1351, 12259), (2093, 7913), (2509, 6601), (3731, 4439)]