12717520

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2239}}^1$

素因数の和:2323

約数の個数: 40

約数和(自身を含む): 29998080

約数和(自身を除く): 17280560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2239, 2840, 4478, 5680, 8956, 11195, 17912, 22390, 35824, 44780, 89560, 158969, 179120, 317938, 635876, 794845, 1271752, 1589690, 2543504, 3179380, 6358760, 12717520]

約数ペア:

[(1, 12717520), (2, 6358760), (4, 3179380), (5, 2543504), (8, 1589690), (10, 1271752), (16, 794845), (20, 635876), (40, 317938), (71, 179120), (80, 158969), (142, 89560), (284, 44780), (355, 35824), (568, 22390), (710, 17912), (1136, 11195), (1420, 8956), (2239, 5680), (2840, 4478)]