28380555

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{211}}^1$

素因数の和:297

約数の個数: 72

約数和(自身を含む): 58438224

約数和(自身を除く): 30057669

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 61, 63, 105, 147, 183, 211, 245, 305, 315, 427, 441, 549, 633, 735, 915, 1055, 1281, 1477, 1899, 2135, 2205, 2745, 2989, 3165, 3843, 4431, 6405, 7385, 8967, 9495, 10339, 12871, 13293, 14945, 19215, 22155, 26901, 31017, 38613, 44835, 51695, 64355, 66465, 90097, 93051, 115839, 134505, 155085, 193065, 270291, 450485, 465255, 579195, 630679, 810873, 1351455, 1892037, 3153395, 4054365, 5676111, 9460185, 28380555]

約数ペア:

[(1, 28380555), (3, 9460185), (5, 5676111), (7, 4054365), (9, 3153395), (15, 1892037), (21, 1351455), (35, 810873), (45, 630679), (49, 579195), (61, 465255), (63, 450485), (105, 270291), (147, 193065), (183, 155085), (211, 134505), (245, 115839), (305, 93051), (315, 90097), (427, 66465), (441, 64355), (549, 51695), (633, 44835), (735, 38613), (915, 31017), (1055, 26901), (1281, 22155), (1477, 19215), (1899, 14945), (2135, 13293), (2205, 12871), (2745, 10339), (2989, 9495), (3165, 8967), (3843, 7385), (4431, 6405)]