20807110805

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{285557}}^1$

素因数の和:285653

約数の個数: 32

約数和(自身を含む): 28784246400

約数和(自身を除く): 7977135595

約数列:

[1, 5, 13, 19, 59, 65, 95, 247, 295, 767, 1121, 1235, 3835, 5605, 14573, 72865, 285557, 1427785, 3712241, 5425583, 16847863, 18561205, 27127915, 70532579, 84239315, 219022219, 320109397, 352662895, 1095111095, 1600546985, 4161422161, 20807110805]

約数ペア:

[(1, 20807110805), (5, 4161422161), (13, 1600546985), (19, 1095111095), (59, 352662895), (65, 320109397), (95, 219022219), (247, 84239315), (295, 70532579), (767, 27127915), (1121, 18561205), (1235, 16847863), (3835, 5425583), (5605, 3712241), (14573, 1427785), (72865, 285557)]