28909825

素因数分解:

$5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{73}}^2$

素因数の和:194

約数の個数: 36

約数和(自身を含む): 42878208

約数和(自身を除く): 13968383

約数列:

[1, 5, 7, 25, 31, 35, 73, 155, 175, 217, 365, 511, 775, 1085, 1825, 2263, 2555, 5329, 5425, 11315, 12775, 15841, 26645, 37303, 56575, 79205, 133225, 165199, 186515, 396025, 825995, 932575, 1156393, 4129975, 5781965, 28909825]

約数ペア:

[(1, 28909825), (5, 5781965), (7, 4129975), (25, 1156393), (31, 932575), (35, 825995), (73, 396025), (155, 186515), (175, 165199), (217, 133225), (365, 79205), (511, 56575), (775, 37303), (1085, 26645), (1825, 15841), (2263, 12775), (2555, 11315), (5329, 5425)]