28717455

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{337}}^1$

素因数の和:400

約数の個数: 64

約数和(自身を含む): 54512640

約数和(自身を除く): 25795185

約数列:

[1, 3, 5, 13, 15, 19, 23, 39, 57, 65, 69, 95, 115, 195, 247, 285, 299, 337, 345, 437, 741, 897, 1011, 1235, 1311, 1495, 1685, 2185, 3705, 4381, 4485, 5055, 5681, 6403, 6555, 7751, 13143, 17043, 19209, 21905, 23253, 28405, 32015, 38755, 65715, 83239, 85215, 96045, 100763, 116265, 147269, 249717, 302289, 416195, 441807, 503815, 736345, 1248585, 1511445, 1914497, 2209035, 5743491, 9572485, 28717455]

約数ペア:

[(1, 28717455), (3, 9572485), (5, 5743491), (13, 2209035), (15, 1914497), (19, 1511445), (23, 1248585), (39, 736345), (57, 503815), (65, 441807), (69, 416195), (95, 302289), (115, 249717), (195, 147269), (247, 116265), (285, 100763), (299, 96045), (337, 85215), (345, 83239), (437, 65715), (741, 38755), (897, 32015), (1011, 28405), (1235, 23253), (1311, 21905), (1495, 19209), (1685, 17043), (2185, 13143), (3705, 7751), (4381, 6555), (4485, 6403), (5055, 5681)]