12885520

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{149}}^1$

素因数の和:232

約数の個数: 80

約数和(自身を含む): 32140800

約数和(自身を除く): 19255280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 47, 80, 92, 94, 115, 149, 184, 188, 230, 235, 298, 368, 376, 460, 470, 596, 745, 752, 920, 940, 1081, 1192, 1490, 1840, 1880, 2162, 2384, 2980, 3427, 3760, 4324, 5405, 5960, 6854, 7003, 8648, 10810, 11920, 13708, 14006, 17135, 17296, 21620, 27416, 28012, 34270, 35015, 43240, 54832, 56024, 68540, 70030, 86480, 112048, 137080, 140060, 161069, 274160, 280120, 322138, 560240, 644276, 805345, 1288552, 1610690, 2577104, 3221380, 6442760, 12885520]

約数ペア:

[(1, 12885520), (2, 6442760), (4, 3221380), (5, 2577104), (8, 1610690), (10, 1288552), (16, 805345), (20, 644276), (23, 560240), (40, 322138), (46, 280120), (47, 274160), (80, 161069), (92, 140060), (94, 137080), (115, 112048), (149, 86480), (184, 70030), (188, 68540), (230, 56024), (235, 54832), (298, 43240), (368, 35015), (376, 34270), (460, 28012), (470, 27416), (596, 21620), (745, 17296), (752, 17135), (920, 14006), (940, 13708), (1081, 11920), (1192, 10810), (1490, 8648), (1840, 7003), (1880, 6854), (2162, 5960), (2384, 5405), (2980, 4324), (3427, 3760)]