19648785

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{337}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 35627904

約数和(自身を除く): 15979119

約数列:

[1, 3, 5, 13, 15, 23, 39, 65, 69, 115, 169, 195, 299, 337, 345, 507, 845, 897, 1011, 1495, 1685, 2535, 3887, 4381, 4485, 5055, 7751, 11661, 13143, 19435, 21905, 23253, 38755, 56953, 58305, 65715, 100763, 116265, 170859, 284765, 302289, 503815, 854295, 1309919, 1511445, 3929757, 6549595, 19648785]

約数ペア:

[(1, 19648785), (3, 6549595), (5, 3929757), (13, 1511445), (15, 1309919), (23, 854295), (39, 503815), (65, 302289), (69, 284765), (115, 170859), (169, 116265), (195, 100763), (299, 65715), (337, 58305), (345, 56953), (507, 38755), (845, 23253), (897, 21905), (1011, 19435), (1495, 13143), (1685, 11661), (2535, 7751), (3887, 5055), (4381, 4485)]