20108403

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{157}}^1$

素因数の和:296

約数の個数: 48

約数和(自身を含む): 35493120

約数和(自身を除く): 15384717

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 107, 133, 157, 171, 321, 399, 471, 749, 963, 1099, 1197, 1413, 2033, 2247, 2983, 3297, 6099, 6741, 8949, 9891, 14231, 16799, 18297, 20881, 26847, 42693, 50397, 62643, 117593, 128079, 151191, 187929, 319181, 352779, 957543, 1058337, 2234267, 2872629, 6702801, 20108403]

約数ペア:

[(1, 20108403), (3, 6702801), (7, 2872629), (9, 2234267), (19, 1058337), (21, 957543), (57, 352779), (63, 319181), (107, 187929), (133, 151191), (157, 128079), (171, 117593), (321, 62643), (399, 50397), (471, 42693), (749, 26847), (963, 20881), (1099, 18297), (1197, 16799), (1413, 14231), (2033, 9891), (2247, 8949), (2983, 6741), (3297, 6099)]