28784985

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1\times {\mathrm{193}}^1$

素因数の和:425

約数の個数: 32

約数和(自身を含む): 47342208

約数和(自身を除く): 18557223

約数列:

[1, 3, 5, 15, 61, 163, 183, 193, 305, 489, 579, 815, 915, 965, 2445, 2895, 9943, 11773, 29829, 31459, 35319, 49715, 58865, 94377, 149145, 157295, 176595, 471885, 1918999, 5756997, 9594995, 28784985]

約数ペア:

[(1, 28784985), (3, 9594995), (5, 5756997), (15, 1918999), (61, 471885), (163, 176595), (183, 157295), (193, 149145), (305, 94377), (489, 58865), (579, 49715), (815, 35319), (915, 31459), (965, 29829), (2445, 11773), (2895, 9943)]